Planet13 - 5:11 pm on Mar 8, 2012 (gmt 0)

@ SnowMan68 and vrottenstein

Big drops on sites in the serps (short and long tail) using only the keyword rich anchor text links from blogs and spammy directories.

I'm also seeing big drops on sites with a link profile full of blog comments with anchor targeted keywords...

Can you elaborate on what you mean by "big drops"? How many positions (or pages) were the ranking drops?