From the forum rules:

7. No promotions of other related sites. There is no problem with occasionally using the name of other sites or even posting a link to a pertinent thread from another site, but repeatedly referring to other related sites is considered "SPAM" and is not allowed. Please have the decency of NOT putting links to them in your signature, profile or have a post, PM or Chat telling our members to come over to another related site. Such activity is ground for removal from signature, and repeated offenses are grounds for being banned.

I think we"re OK with this one...