a lot of sites (including mine lol) have whole pages dedicated to just other people's site buttons. some folks do links swaps, but i think most just grab and go
Link as many or as few buttons as you like! Just be sure to save people's buttons to your own server (no hotlinking). Anyone can link anyone's button, it's a free-for-all basically!
HAHA YES >:D I love your site too, and yes that is Sakuma lol I may have enjoyed Hadaka Shitsuji more than a normal amount
new blogpost! Nothing too important lol