We’re going to keep digging in, but people need to bear in mind that Bigdaddy does have different crawl priorities, so a site that had more pages indexed by the earlier Googlebot won’t necessarily have as many pages indexed in the future. But don’t get me wrong; we’re still going through the feedback to see if there’s anything else to be identified and improved.
After re-reading and re-reading MC response to Donna, it seems pretty obvious that they simply don't know what the problem is. And while the sudden appearance of GG is the largest indicator that G acknowledges there MIGHT BE a problem, it sounds like they no clue where to begin.
This is so disappointing. I guess if they are not going to fix it, because they don't believe it is broken, we'll just have to forget about Google and rely on the other search engines. I for one will not continue to promote Google while I'm not in their index. I've already closed my Adwords account and Adsense is next as soon as I have setup an alternative. It does not make sense to promote a search engine in which you can't get your own websites listed!
From the looks of things, the new Big Daddy "algo" (for lack of better word) percieves most every site as having a spam penalty. If we go by MC/GG explanation, all of us are incurring some type of spam penalty which is resulting in our pages being dropped.