I did a comment on an app called SalahForFalah and I deleted it. How can I delete it from your website too?
If you have an account on the website, then visit the official page and check if you can remove your comment. It should be possible if you are the author of that comment.
Secondly, if this is not possible, use the support page and create a ticket: http://support.informer.com/?start&iphone