MySpace has simply exploded since the deal was done last July. Measured in terms of page views, MySpace has become the second-most popular site on the Internet -- behind Yahoo! (Research), but ahead of MSN (Research), AOL (Research) and Google (Research). It has 66 million members, and about 250,000 new ones sign up each day. That's a mind-boggling growth trajectory for an Internet site that was launched less than three years ago.