I'm not too sure who is familiar with Web of Trust, so I'll start with a brief description. It's basically a browser app that inserts a circle next to text links in websites. The color of the circle indicates whether or not it's average rating by users rates it as having a "good reputation" (green) or a "bad reputation" (red). There are four criteria: Trustworthiness, Vendor Reliability, Privacy, and Child Safety.
Singularity.org's printout is here. As you may have guessed from the title, Web of Trust lists Singularity.org as "poor" in trustworthiness, vendor reliability, and privacy. There's a comment that, when translated (via Google translate) says "Mass mailing of non-thematic Forums". It's also commented under the category "malicious content/viruses".
I'm not entirely sure how these ratings are generated, (How Ratings Work, related) but I've used it for several years, and this is only the second time I've disagreed with a rating. I've always found WOT to be very reliable, and a decent way of warning me if a site is unsafe so I don't have to think about it. So I was fairly alarmed when I saw the red circle there, since I'd imagine it's turning away people that don't know any better. If LW had a red circle, I never would have come here. I'm not sure what SI or LW can do about it, but there's a "click here if you are the owner of this site" button, although I don't know what that does. I've left my own rating on there, but it didn't seem to change the overall rankings.
Edit: When I made this post, the scorecard read Trustworthiness 30, Vendor Reliability 31, Privacy 31, Child Safety 100.
I've registered at WoT and requested a reevaluation. We're also making a couple of changes the WoT reevaluation request process seems to suggest are important (like more prominently linking the site's privacy policy).
http://www.mywot.com/en/forum/24394-singularity-org
http://www.mywot.com/en/scorecard/singularity.org
Thanks! So it seems the previous owner of the "singularity.org" domain did some spamming. The other domain "singinst.org" has good rating.
EDIT: See here -- SIAI purchased the domain in April 2011, but the spam complaint was written in January 2012, which is later.