Glitch on the ratings system

It is unusual when it is in the same day. The movies on my list rarely drop, and yesterday it happened with a lot of movies. Besides it is a list of classics, old movies, so they should have a more steady rating. For example. yesterday How to Marry a Millionaire, The Other, Hairspray and The Grifters had dropped from 7.0 to 6.9. FOUR movies, when my list normally stays for months without any movie drop to 6.9.

I am an IMDb user for 24 years now. I know what I'm talking about.

I've captured  some more data. Using one of my lists with 2600+ titles, I used ATS to look at the 276 titles currently rated 6.9 or 7.0. Using the mouseover data from earlier this week, I identified 51 of the 276 that declined in rating, and 3 that ascended. By exporting them, I've captured the number of votes, so we can look at them again later if needed.
Here's the export:
https://docs.google.com/spreadsheets/d/1y4PBDfYnk1rWIIC_aFoaC0g41Buo1XWbSTK4rPUVbh0/edit?usp=sharing
And here are the lists:
7Aug2019 Titles rated 6.9-7.0
276 titles 
7Aug2019 Titles that dropped this week
51 titles

Angelo, I'd be willing to extract similar data from your list, if you'd like to share its URL.

Hi Angelo -

I have reported your observations (as well as the other observations mentioned in this thread) to the appropriate technical team who will take a look, as soon as I have further information I will share the updates with you here.

Checked my list of 276 films with rating 6.9-7.0 created yesterday (22 hours ago as of this edit), and updated the spreadsheet to compare today's ratings.

I'm surprised to find that 24 films have changed rating, only 1 of which increased, AND that only 5 had a change in the number of votes:

Updated to show the 6 titles that dropped already this week.

Angelo is absolutely right. I check this website https://250.took.nl/ every single day, it shows how the Top250 changes on a daily basis. And in the last couple of days, I have noticed that instead of 10-15 daily changes, it shows now every day approx. 100-150 changes, which is abnormal. I also noticed, the there is a drop only for old movies.

The list is really long, but just to mention some classics for today (9th of August): Casablanca, Star Wars, City Lights, Alien, Apocalypse Now, Vertigo, Dr. Strangelove, etc. I mean, the chance, that the ratings for all these movies drop on the same day is just simply impossible.

So either there is a failure in the system or someone - or a group - has registered multiple accounts which tasks is to get rid of the old ones from the list. Would be a pity though, if that would be possible.

Please, check it.
Peter

Thanks, Péter. I think it is a failure because it is affecting all kinds of movies, with any kind of number of votes, not only the ones with 25000 votes or more. 
Since IMDb didn't solve the matter yet I think maybe should be a good idea if you create a new post specifically about the Top 250 issue. Maybe then they will be aware of how serious this problem is.

hi Angelo, check my thread as well:
https://getsatisfaction.com/imdb/topics/indian-movies-top-250?utm_source=notification&utm_medium=email&utm_campaign=new_reply&utm_content=reply_button&reply[id]=20234321#reply_20234321

i've analyzed the movements in the top 250:
-russian, turkish, and most of all indian and some japanese and old movies went up more than 20 places in 2 weeks (movies that usually dropped a lot of positions in the last months)
-classics dropped more than 20 place while they usually kept the same spot for years.

I've seen that on the weekend (saturday and sunday) we have the same old chart: 10 changes only and the movies follows the "old" scheme
From Monday to Friday in the last 2 weeks looks like a guy is pressing some buttons to make movies go up and down from the list and adjusting their overall vote, weighting manually the vote.
It's a pity and i hope they will solve the issue soon.
I hope this week they won't make a mess again, instead in a month we'll see a whole 250 list filled with unknown Indian movies, while the classics sit outside the chart.

200.took.nl is perfect for analyzing such strange changes in the rating system.

Let's see what they will do... and if they want to give us some answers....

I wonder if this is related to this thread where the same user has multiple reviews posted for the wizard of oz.
https://getsatisfaction.com/imdb/topics/how-to-report-a-same-user-profile-who-left-36-reviews-for-1-...

Although because they are rating it 10/10 they might be trying to keep it high, but some others might be using this glitch to lower others and raise others??

Ed as a fellow senior (although I'm less senior) I have to disagree. Some movies (and shows) are classics regardless of technology. Technology is certainly a facet, but do you rate movies solely on technology?  When I rate a movie I certainly look at tech, but also consider the acting, story, does it make me want to watch it again, something I would want to share, and several other angles I can't express.
I'd bet that I probably rate things more highly than you in general. Maybe it's because I'm not in the biz as you, so my standards are different.
Without looking I'm sure Oz has a 10 from me without looking, and I can't image lowering it. Off the top of my head another title would be Rikki-Tikki-Tavi. Animated nothing like what can be done today (like the Monsters movies), but to me it's simply a great story.
But I have to agree that I do change ratings on titles, but I tend to do so about equally up and down but it's not for what I think are considered "classics" or ground-breakers.
Just some thoughts from a bum.

Somebody is clearly pushing some buttons to make movies go up and down.
Like I said, the weekend was ok with no huge movements and then.......it's now monday morning in the USA and we can see AGAIN some huge movements in the list.

At 9pm CET we had 10 movements in the top 250 (maximum +2 or -2 places)
At 10.30pm CET we have now 150 movements in the top 250 (maximum +5 places from russian, indian movies AGAIN).

this site is becoming useless. you know any other place with a clear rating system? is there a site where we can have some fun like we had on IMDB til a month ago ?

Yes, and today two more movies from my list of classics have turn from 7.0 to 6.9: Barabbas and Harper. When the things were normal this was very rare. It usually occured with no more than 5 movies a year. And no answers from IMDb staff yet. 

Here's today's update of my sample of 276 titles which had a rating of 6.9-7.1 on 7Aug.
18 titles dropped, 3 rose.
Notice that only 1 title LOST VOTES, and that is a single vote. 
6 highlighted titles dropped for the 2nd or 3rd time since ~5Aug.
I did monitor the list over the weekend, and nothing changed then; these are all changes as of today.

To see the full spreadsheet, click here.
To see the 92 drops (some titles listed 2 or 3 times, see this list.

@bderoes thanks for the list, it shows really well that something is not right.
It is strange to see, that the rating of these movies dropped besides having the same number of votes.
Yeah, I believed for a minute the previous explanation stating that inactive accounts have been deleted, which btw would make sense, but than the number of votes should have dropped as well, so obviously there must be a glitch.

IMDB!!!!! PLEASE FIX THE ISSUE!

One more thing. I am not checking the formula iMDB uses regularly.
Did someone notice any change? Or is it the same formula they use for years?
Because that would also explain the change.