Has Google Caffeine Changed Your Site's SEO Rankings?
Google created Caffeine with speed and accuracy in mind. The new indexing service crawls and analyzes websites much faster than before, which enables more accurate real time results showing up in the search engine results. This means that sites with fresh content will benefit from Caffeine.
Thus far most sites with constantly updated content have seen no major changes in the results. It could be that their content is working well for their SEO results, or perhaps Caffeine has been overrated? Only time will tell, and SEO providers and web developers will be paying close attention.