Every SEO in the world should have heard of the May Day Google update by now. I mean, we covered it on May 3rd, May 14th, May 25th, May 28th and once again on May 30th. But I am sure there are some that never heard of it.
In any event, we may have an update for you.
A WebmasterWorldthread has several webmasters reporting a ranking change in Google on June 2nd. We have several webmasters all saying the same thing. They had great rankings in Google on June 2nd and then June 3rd, the rankings are gone.
Some are saying the site is gone and some are saying just downgraded. To me, it sounds more like a link or trust penalty of some sorts. Here is one quote:
Yes I noticed a drop in traffic on all my small sites with exact keyword in domains, low in bound links or non quality.
Mine have not dropped off the map just a page or 2 from #1.
All my normal larger, older sites have been doing very well.
Forum discussion at WebmasterWorld.