A graphics forum which has been plagued with immature kids and crappy administrators. The talented artists' artwork are drowned out by spam of horrible looking "signatures."
Many people have been banned from the forum for many stupid reasons. These reasons include: talking back at admins, posting something that it logical, and being yourself.
SI is closely affiliated to Exdat (Extreme Data).
At Slightly Insane, I'll post a random signature that everyone will praise on SI even though I worked on it for five minutes.