CainIV - 6:07 am on Nov 21, 2009 (gmt 0)

There is value in doing this in my opinion in terms of increasing search engine activity on the website you are promoting, and passing some link juice, so for that reason alone, it makes sense as a 'sub campaign' of a link campaign focused around getting quality 'editorial' links to your website. It's all about diversity, and profile links are one piece of the pie so make sure you have a strong diverse cross section of links in addition to these.