I've had 10 for the longest time.
[edit: was given more invites for all the times i got the mods at UG out of bad drug deals]
Anyways, I've been there for a while and they have every single ROM, disk image, update, OSTs... Pretty much the digital form for everything videogame related.
I love the site and everything is very high quality and to the highest standards. The love and care put into this place not only made me want to donate but I actually contributed a little by putting together some content myself which everyone really seemed to like.
If anyone wants an invite post here and I will PM you. Emulator nerds will blow their load at this place.
I GOT MOAR.
HAVE 4 LEFT NOW
Currently saving 2 for sam and captain. If I don't get emails I will have to move on to the next peoples 
Invites sent off:
1 darkvare
2 mew barios
3 ItalianStereotype
4 executioneer
5 10k
6 creeposaurus
7 Pentagarn
8 k0k0
9 King Hadas
10 guslygris
11
12
13
14