Thank you all for your great reviews
I too feel so caffeine update is not going to harm any way its just an architecture which is helping Google to more optimize his results.
And as per flash is concern yes Flash is always a benefit of doubt for all that its not search engine friendly,which is half true as search engines are improving themselves to crawl flash files
and secondly as search engines says that they crawl text in flash so one should be careful which dealing with flash from SEO perspective and try to create textual flash and not just images, and submit that with your sitemap to Google webmaster. May that will help your flash file crawled by Google.