No we are not talking about the Caffeine that fuels so many offices and comes in cups of lovely warm coffee, instead this is Googles latest change to there algorithm, the program that helps them rank websites on the internet and allows them to pull the correct results from the data base when you search for a term.
Caffeine, which is new technology that improves the indexing infrastructure is according to Matt Cutts of Google due to go live some time after the holidays, I have consulted my American to English dictionary and I believe this means in January.
Matt Cutts comments that this is so web developers can enjoy there holidays with out worrying about what effect the changes will have on their sites, although from the initial testing we have seen a well optomised and site with content that adds value to the internet as a whole will benefit rather than suffer when these changes take full effect.
The changes are designed to give a better experience to the user of Google and so if you have a search engine optimisation plan that is not spammy and that adds value to both your site and the whole of the web then you should be looking forward to the introduction of Caffeine.