About a year ago today, we wrote about a Google experimental test for voting up web results. Well, it seems like Google is now pushing that test out to users. Several folks are now seeing it.
We have a WebmasterWorld thread with some people noticing it. We have blog posts from Justin Hileman, Garett Rogers, Alex Chitu and a German blog noticing this. Here is a video that demonstrates it all:
Alex notes that all users are not yet able to see this, but you can see "traces" of the Google SearchWiki by appending &swm=2 to the end of your search result string.
Going back in time, Google had a remove result feature, which they dropped a while back. This is a bit more sophisticated than simply removing results from the search results.
Forum discussion at WebmasterWorld.