No problem! Though the top ten at the top's inaccurate now (by my figuring it should be Runescape, Lyrics, Call of Duty, Glee, Wookiepedia, Halo, Disney, Yu-Gi-Oh, Club Penguin) but I'm not sure about how to get hold of the icons to go alongside Halo, Disney and CP - the others were all uploaded by staff.
If you can't find a logo for Halo, I suggest just using the standard Wikia logo: File:Wiki.png. I used that as a placeholder for the proteins wiki on Hub:Big wikis.
That said, I'm looking at the Halo Wiki now. They have a logo for monobook, which is the right shape:  or you could use the letter O from the wordmark: . Are you okay doing that, or would you like me to?