brianp - 2:34 am on May 16, 2013 (gmt 0)
We've seen the 5/6 drop and I can tell you the only thing we've done lately is add a ton of new products to our website. All original product descriptions, no affiliate links, no scripts, nothing shady.
We also do not actively go out and solicit links. Nor have any shown up that look like anything negative SEO wise.
I'd lean towards this being something related to content. That is what we're looking at now, as that is really the biggest and really only change we've made.
We had a MASSIVE spike in googlebot activity from 4/24 -> 5/1 with crawl rates now being 1/4 of what they've been for months.