If you want to see how your site will fair in Google’s next major update, have a look here: https://www2.sandbox.google.com
Google announced today its intention to re-engineer some of its workings, particularly how fast it indexes content, in an effort to improve its real-time search results, an area where it senses the market is moving and sites such as Twitter might steal a march.
Note that this sandbox preview version of Google is missing many of the niceties we’ve come to love in the last couple of years, as Matt Cutts says in the blog post, but if you notice any issues, they want your feedback using the “Dissatisfied? Help us improve” link at the bottom – just put Caffeine somewhere in the text.