I remember I used to use Roboform when I'd do paid surveys; saved some time. Unfortunately, paid surveys are not very profitable (unless you are selling people Clickbank subscriptions to "exclusive paid survey lists" or something)
I can definitely see Roboform being useful for creating throw-away email accounts and web 2.0 sites. But can it handle different identities? Surely, you don't want to use the same name for all of them... Or, is there any Roboform-like software which can fill out every field with random but realistic details?