Only writing down the answers which I would have known or guessed WITHOUT looking at the previous posts, I'm no cheater .

2. What was Cracco Clan named like before it was actually changed to "Cracco Clan"?
- Cracco Club!

3. Name the clan Bobby aka Dizzy made a hotel for.
Probably DL? I don't know if he's been in any other clan before that.

6. Name the only clan to develop its own level design group and name the group as well.
- CC with Cracco ^^.

7. Name the two clans taken over by [si].
- D3 and dt!

8. Which two clans merged into Xtreme Soldiers of Darkness?
- RHSP and PPC.

10. Name at least 3 clan alliances where Cracco Clan has taken a part.
- CTU, CCXSÐ and CKA, most notably.