If you are an upcoming unsigned artist or musician and haven't already added your last.fm link then you can goto http://www.vox.com/account/profile/ and scroll down to the very end of the page
My Vox | Edit Profile | Additional Links
List your personal websites and other blogs on your profile. Get more info.¶
THEN Just add your last.fm page to the list and then it's really easy for your fans to add your music to their last.fm favorites ! And saves any potential fans from bugging you with emails asked what your last.fm page is !