The reports are true, Google SearchWiki is back. The reports continue to be mixed. There’s even a Greasmonkey script created by Franz Enzenhofer to remove the SearchWiki available here.
Please make this optional. Keep it in the lab while the bugs are worked out. Don’t add and remove as you work out the bugs, let users add it to their search results if they want mess with them fine.
I’m a little concerned that search results vary already based on location, and whether you are logged into Google or not. That already confuses matters enough. The good old search days when I would search for something and everybody got the same search results, no matter, Madrid, New York, Portland, Los Angeles, all got the same search results. I kinda of miss those days.