It's allowed, but it's pointless to have a link to it in your signature because guests (including google) can't see it. A more effective place to put it would be in the homepage url slot as that's viewable by google and it's not a no-follow link.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.