2 days ago the sites lost rankings for ALL the keywords and the site ranked for quiet a few. The linkbuilding that I've done 2 months ago wasn't that crazy at all really, 5 guestposts, 5 homepage links, and I think 25 or 50 manually made web2.0's so this aren't really the links that penalizes a site I would say.
Any idea if this can have to do with the new blog that is added? The site remians the same, the wp blog is just installed in a subfolder /blog/, the client asks me if it's smart to remove the blog again.
I can't imagine a blog full of unique content can cause a penalty right? I suggested to wait a while to see what happens, maybe it bounces back.