Are they allowed? If so, which ones? :-)

Yes they are, most of them. If you're unsure about a specific one PM it to an admin and see what they say.

http://csgo.gamebanana.com/guis/28171

I was looking at this one~

[url=http://csgo.gamebanana.com/guis/28624]That's fine but you might want to use the latest version.[/url]

(y) ta for the help, already had the updated one :)

Iv just installed that one

 Phantom
! ITS SICKK!