Lion compatibility of them.
Originally Posted By: grelber
Ain't "progress" grand?

Isn't that statement a bit premature? Anyway, have you seen this Firefox Help page on blocking cookies?
For Safari there are the following freeware utilities: Safari Cookies, SafariCookieCutter, and, perhaps, Cache Out X. Unfortunately, I'm not sure about the Lion compatibility of them. Finally, you may want to look into how to enable Safari's "Do Not Track" support in Lion.

alternaut ◉ moderator