Every startup needs exposure. So as part of TechCrunch50, we’ve signed up some major partners to give $1.3 million worth of advertising to the startups launching at the conference next week. We’ve already announced the first $1 million of this advertising from Facebook, Google (Youtube), Microsoft (Bing) and MySpace.

They are being joined in their generosity by Break Media, Glam Media, AIM, and Amazon Web Services. All of them will be giving advertising in kind to the TechCrunch50 finalists. Amazon will be giving credits for Amazon Web Services, something every startup can use. And Perkins Cole, as previously announced, will be providing free legal advice.

With a total war chest of $1.3 million in advertising, you can expect to be reminded about these startups well beyond their launch.