curioustoddler - 5:35 am on Jul 26, 2010 (gmt 0)
I am also thinking of going back a little on few things.I feel we should try to undo most of things which may have triggered this filter.
1. Even if they are not hidden links, I have deleted those links from google maps.
2. I am going to remove noindex tag.
3. I can not change new site navigation. As new one has less links on pages and we deleted useless links from nav.
4. As I found on this forum, most of the time this kind of minus 50 penalty has to do with links. For our site, we did not get any spammy links but google did find our most of links in May and June. Many of them dated back to 2009 but WMT started to show them in May and June. So google found most of our links( gained over a period of 10 months) in six weeks and it may have tripped some filter.. I suspect it may have to do with speed of links. I can get rid of more than half of those links if it may help us get out of this filter.Rather i have started working on it. We will try to undo most of the things which happened during last few months except the site navigation. Because i think new navigation is much more user oriented, puts less links on pages and there are no sitewide links in any nav anymore except few links in header and 3 at footer( contact, privay etc.).