We’ve released our new index update with data up to 16th of December 2010. You might notice that search results as well as reports will have fresher dates on backlinks – this is result of our new recrawl strategy that we put in place last month. The higher the ACRank of the URL the more frequently it will be recrawled, we also give priority to homepages and subdomains in our recrawl.
One side effect for some sites might be that links found might not grow as fast as before – we will be keeping an eye on it in the following months as we tune up our recrawl strategy to provide a good balance between crawling of newly discovered pages and recrawling of existing pages.
Keep an eye on this blog – we’ll post details here!