Looking at the perks, honestly, none of them really excite me...but I'm sure they are appealing to other members here, each to their own and so on..
i'll brake it down:
Ad-Free Browsing - no doubt its a nice thing, ads = annoying, but loads of other forums i'v been on have them and they don't bother me that much anyway
Red, Bold Username (and you can change it, too!) - honestly I wouldn't care if my username was bright pink. Having Red, Bold Username is to stand-out and just screams attention seeker or something like that
Keep 2,000 Private Messages - PM function is something I barely use on any forum. so i definitely don't need space to keep 2000 messages
View 100 Posts-Per-Page - same thoughts as Ad-free browsing, nice tool, but the current post per page does me fine.
Bigger Avatars - an extra 20x20 pixels...yeah that's massive!
Private Forum Access - Curiosity would come in here, but again there shouldn't be anything on a forum that needs to be hidden from members apart from a admin/mod VIP section like I mentioned in my previous post.
others
Close your own topics - same as my thoughts on Ad-free and View 100 Posts-Per-Page
500MB of web space for gallery for your own photos - I have my facebook, flickr etc for that
20MB of space for attachments - never use this function
Honestly the reason I joined GTP was for the GT5 photomode comps etc. but lately I haven't even been doing them, my time spent on GT5 per week is on a low, 2/3 hours at most.
Me jelly? yes I like eating jelly with some ice cream..but that's about as far as it goes.
so @Aldo, Azuremen - thats' just crazy talk!