As I think a lot of you folks know, I'm a big fan of Baseball Prospectus.
If you aren't a subscriber, BP is running a promotion right now where all their content -- even the pay section -- is currently available to everyone, through August 3.
I'd definitely encourage everyone who doesn't normally read BP to check it out...it is an incredibly addicting site, with several new articles every day.
Right now, Will Carroll is also doing a rumors blog called Will's Mill over there, with the latest entry updated the Soriano rumors.
Will Carroll's Under the Knife column is worth the cost of a BP subscription alone, and so be sure to check it out, along with the Will's Mill rumors.