For those of you that don't know, the head of Webspam at Google, Matt Cutts, mentioned that there will be some type of significant algorithmic update unleashed tomorrow or Monday. So, what does this mean kids? Well, as long as you're optimizing, or attempting to optimize, your site with Google best practices in mind, everything should be swell. For those of you that still love the old "Black Hat" approach to SEO, you might want to keep an eye on your organic search traffic and rankings via GA over the next few days.
So, for those of you that are a little nervous about the next few days, here's a friendly piece if advice. Go to your Google Webmaster Tools account, find your site, go to "Health">>"Fetch as Google" and type in the path of any of your pages in the text box that you are unsure about. This tool will render what Google potentially sees when they crawl your site, as well as header responses. You may get an idea of the SEO friendliness of content on your sites pages; is it lacking in plain text? is it using technology that is invisible to the Googlebot?, or is the page so full of poor, keyword stuffed content? If this tool identifies any of these issues, it may be time for an overhaul of your site's content!