After reading this posting http://forums.digitalpoint.com/showthread.php?t=2227388 I am a bit doubt, I found that our profile home page link is follow, that is the only link working. Reason: 1. Yahoo site explorer show that, I receive link back from DP. 2. Next I tested with FireFox tool, the result are: signature link and blog link not follow. twitter and homepage link are follow.