Hoople - 10:14 pm on Jul 16, 2011 (gmt 0)
+1 to CainIV's thought.
Last time I checked the links from the lens were nofollow until the page was over a certain quality (amount, types and depth of content) and was voted on as good by a minimum number of community members.
In the past many thousands of pages were created there for SEO purposes. Depending on who you ask it's either close to 'burnt to the ground' (by SEO abuse) or 'done and still smoldering a bit' :-)
I built one ages ago - not sure I'd personally would invest the time to build any more for a likely nofollow link.