From this and other threads it seems as though it must be one (or a very small number) of factors affecting rankings. Has anyone seen the drop in traffic/rankings across a large number of sites you control? If so do all of those sites have anything in common they may be over or under weighted for in the algo? We also saw a spike in Googlebot activity in late April and may have had a small drop in traffic around May 4 and 5 but the rankings on our head terms actually improved and we are driving traffic from more keywords than previously, not less. I've seen some threads saying that WordPress sites are more affected than others but our WordPress blogs seem unaffected. I'm either really happy that we seem to be doing a lot right and that's why our traffic hasn't changed, or nervous that the other shoe is about to drop...not sure which at this point. To those of you who have dropped< are you confident that your architecture is sounds, your link profiles are robust and varied, and that you have lots of fresh content?Do you have dedicated hosting or shared?