Rick_M - 9:27 pm on Apr 3, 2012 (gmt 0)
I noticed for my forum pages Google seems to be showing the first post date instead of the most recent. On some threads this could span a few years, and I know visitors are less likely to click what they assume is an old post.
One of may sites lost 30% of its traffic since around March 10. The sites ahead of me are either the main company site for the search term (on some searches up to 4 listings for the main company) and a few searches have keyword matching domain names with only a few generic pages on the site.