deadsea - 8:13 pm on Feb 14, 2012 (gmt 0)
A few years ago, I had a large network of adult sites that started using one of the widgets that I had written. The network had over 100 sites and each site had a link to my site along with the widget. I was a little worried about what that would do to my rankings as I probably only had about 300 other sites linking to me at the time.
The good news is that the links didn't seem to hurt at all in my case.