incrediBILL - 6:33 pm on Apr 10, 2011 (gmt 0)
Actually I don't understand what Panda exactly is and I haven't noticed changes in my traffic in spanish.
It's a site-wide penalty for sites that fit certain criteria.
Many commonly seen sites will plunge into nowhere, blogs, ecommerce sites. etc., for no apparent reason. Pretend you had a B&M business hit with a nuclear warhead, gone. POOF! Other junk that survives the blast zone will float to the top like cream although Google claims this is the junk they're trying to kill.