There is a LOT of chatter going on about Google’s latest update. Google bragged about the number of changes they made in February – they may be trying to surpass internally set goals.
Basically it means that you have to get back to basics. I’ve discussed the elements for SEO that you need in previous posts. Click on this link to download the latest copy of Google’s SEO Starter kit. http://static.googleusercontent.com/external_content/untrusted_dlcp/www.google.com/en/us/webmasters/docs/search-engine-optimization-starter-guide.pdf
If you go back to basics and play by the rules you should be safe.