Winer: They probably do care, in an abstract and aggregate way. But what if the performance never came back? Or what happens if Google stock stops going up? Who wants to be on Gmail when that happens?If that happens, switch clients. That's the awesome thing about Gmail compared to Yahoo or Hotmail. No lock in. Gmail lets you specify a different email address which effectively makes Gmail just another mail client for me. For example, my email goes to and comes from my crazybob.org address, not my gmail.com address. It's difficult for recipients to tell I even use Gmail. If you use your gmail.com address and still want to switch, use the forwarding feature. When it comes time to export your email and use something else (Apple's Mail.app for example), you can use the POP3 access. Yahoo and Hotmail charge premiums for these features if they offer them at all. Disclaimer: I work for Google.