Google just keeps rolling out the services (which may or may not be a good thing). I just read this afternoon over at Google Blogoscoped that Google released the Google Website Optimizer which allows users to test different versions of pages on their websites to see which perform the best.

This is something I am particularly interested in. Not that I would really use it on my own site, but I could see it’s use in e-commerce sites and the like. As long as you don’t mind Google seeing your data, and let’s be serious, look at all the other information Google has about you (assuming you use Gmail, the Google Toolbar, Google Desktop and a host of other Google offerings), what’s one more piece of data?

This tool seems like it could be really useful, and it gives an easier way to set up testing of multiple pages for performance issues.

If you’re interested in this kind of stuff, check it out.