One immediate thought I had about the e-mail problem is how online-dating sites deal with it. Now, I realize online collaboration is completely different user

One immediate thought I had about the e-mail problem is how online-dating sites deal with it. Now, I realize online collaboration is completely different user motivation. Online dating preys upon a somewhat already-desperate userbase. But it's also genius how they deal with the e-mail problem. For example, with Ok Cupid, they include a giant one-click "Login" link with e-mail updates. There's no password re-entry. With other sites, they send you just enough information about a connection that makes you want to sign back in again, but not enough information to let you contact that other person directly via e-mail.