A WebmasterWorld thread asks how long might it take for a search engine to discover new links and then have those new links impact your search results.
For example, let's say you write an awesome article and you get 50 new links from authority sites to the article. How long will it take for those new links to impact the search results landscape in a particular search engine.
Without a doubt this topic is most likely extremely controversial. Here are some quotes from the thread, but none should be seen as fact:
I have noticed completely different. Links to my site affect SERPs as early as 4 days after I get them. All depends on the volume.
If the domain is trusted it is pretty much immediate I think. On a new domain, I have no idea how long it would take.
Plus each engine picks up new links at their own speed.
It is interesting that Wiep's Link Value Factors doesn't have this question.
Forum discussion WebmasterWorld.