24 year-old male I do accept random friend requests but if you don't bother sending messages or leaving me comments and shit I'll simply remove you from my friends list, i don't mean to be an asshole but i don't want to have people in my friends list when they don't even message me or anything.
Also, just because it says im online doesn't mean im on, i usually just leave it on my profile even when i leave somewhere or something like that, and don't bother asking things like "Do you remember when..." or "can you add me on XBL?"