The only time I'll remove feedback I left for account sellers/buyers is after a significant amount of time has passed and the member has done something (usually gained trust feedbacks with valid references) that proves they're trustworthy.

In your case, you claim you were new but 6 months after registering on bitcointalk you were trying to buy accounts at a time when members were consistently being tagged for such--and you should have known better.  You haven't done anything in the 5 months since I left my feedback on you that would convince me to remove it.

This isn't the thread to appeal negs I've left, by the way.  PM me if you've met the above criteria.