Google launched an algorithm update that affects the diversity of search results. Google's head of webspam and Distinguished Engineer, tweeted:
Just fyi, we rolled out a small algo change this week that improves the diversity of search results in terms of different domains returned.
There have been complaints in recent weeks about Google showing search results pages with a lot of results from the same domain for a lot of queries. Presumably that will be better now, and users will get a more diverse set of results in more cases. Or maybe it's just about spreading the love among more domains in general (and not just per page).
That's as much as we know about the update for now, but it'll be interesting to see if the change is noticeable on a day to day basis.
There has been talk from webmasters that there may have been a new Panda update this week. We've not heard from Google on that front, and it's unclear at this point whether this could have been the change people were noticing.
Google's big list of algorithm changes for the month of August is due out any time now, and when it's released, we'll get more insight into the direction Google is going on, and its core areas of focus in recent weeks. Stay tuned.