Now, off the bat, I realize that the "site:" is not a great recognition of the amount of pages Google actually has indexed for a site. However, I keep track of this as well as other statistics weekly for my site and my competitors. Over the last two weeks I have seen this index increase 10 fold for my site and all the competitor sites I monitor for. With some indexes jumping from 200,000 (large ecommerce sites) to up to 1 million pages in the index. I thought it was a fluke but this is the second week in the a row that the "site:" has returned such high results.
Was wondering what you guys thought about these changes?