5 years would be too long to have your content generate traffic for the sites that mashed it up, but that's just my opinion.
Uh, I was talking about how they'd outgrown their old indexing and storage system and how long (at the minimum) I would guess they plan to use the new faster one. The results can be changed and adjusted and refined by the algo, but getting a more robust storage system in place was a must, and now, by changing the storage and indexing system (from Big Daddy to Caffeine) they have access to more data, which would logically and realistically probably throw a few wrenches into the results, which is something they can correct over a relatively short (months?) time, but they were basically over loading the old storage system (Big Daddy) and it needed to be changed.
Not really sure what you were talking about, because the algo and the infrastructure are separate systems... The algo basically processes and ranks the data within the storage system, and can be refined independently from the method used to store the data.
Caffeine is infrastructure, storage, organization, etc.
The algo still does the processing and ranking, so it probably needs to be adjusted to handle much more data than it had access to before.
[edited by: TheMadScientist at 1:07 am (utc) on Jun 9, 2010]