Twitter is already struggling to stay afloat as the tech world buzzes about Apples WWDC 2008... and Steve Jobs hasn't even taken the stage yet. Perhaps Twitter shouldn't have made their "we're ready" announcement yesterday (or as Michael Arrington noted, "Tempted Fate")?
Twhirl isn't passing data in either direction and Twitter.com is moving remarkably slow.
That said, TechCrunch is down as well...