A problem with an user who is deleting keywords without reason

Hi i'm using IMDB for some months but Im new on the forum, and I have a problem with a guy who is deleting keywords related to female nudity without no reason The keywords are this: Female-nudity (there was 40700 titles 2 days ago and now its on 40300) Female-rear-nudity( there was 22010 titles 2 days ago and now its on 21600) Female-frontal-nudity(there was 16080 titles 2 days ago and now its on 15600 titles) Female-full-frontal-nudity(there was 16900 and now it's on 16461!!) So, he is deleting SPECIFICALLY those 4 keywords on IMDB , please catch the person responsible of this and banned him and restore the keywords who are more than 1.000 in total!!!!