Nielsen//NetRatings just released September ’06 search data. Here’s the data (I added the “all others line.”):
Obviously Google is the big winner here. Yahoo, Ask and My Way received healthy growth Y/Y, while MSN, AOL, iWon and Dogpile are suffering. Backing the data out, I estimate a year-over-year increase of 16.9% increase in total # of searches. If I had unique visitor #s to go with this data, then we’d know exactly how much to attribute to increased search activity per user, but my hunch is that much of the 16.9% can be attributed to increased activity.