A snippet from Will Carrol in today's UTK column that Powerhouse mentioned:
http://www.baseballprospectus.com/article.php?articleid=6209
(the relevant portion is available to everyone)

Oh goody, more steroid news! There's another day of churn surrounding David Ortiz, spinning his logical, open-minded assessment of how things have changed into something approaching an admission. The Mitchell investigation is attempting to look deep into the personal medical files of people like Rafael Palmeiro and Sammy Sosa, which leaves everyone to guess their favorite sluggers to fill out the list. Let's face it--facts aren't relevant here. We have a raging orgy of Chemical McCarthyism, blocked by its own failings and shadowed by the threat of government intervention. Call me an apologist or an ostrich if you'd like, but the fact is that there are few facts here. Kirk Radomski's dirty three dozen remain hidden, just like the Signature lists promised from Albany's drug investigation.

We need more players like Ortiz, willing to stand up and say that he doesn't know what he took ten years ago, back in his homeland where even now drug laws and labeling requirements aren't exactly stringent. This isn't a new story. When the buscones come and the promise of a trip to the United States comes calling, few Dominican teenagers are going to ask if there's anything extra in the B12 shot. If Ortiz took something, knowingly or unknowingly, a decade ago, what does it matter? If he took it in 2001, it wasn't banned, and it wasn't tested for. If he took it in 2004 or after, then the testing system would have caught him. Juan Salas found this out, as did Mets minor leaguer Jorge Reyes, who was hit for 100 games, something that amounts to a near-fatal career move for a guy in Single-A. Are players cheating? Sure. I'd guess there are some taking steroids, and some are taking growth hormones or the more exotic concoctions that are coming out of pseudo-Japanese labs on the East Coast. I'd also guess there's a player who's learning how to load or scuff a baseball and one or two that knows a bookie a little too well.