I don't quite understand forging on the web wallet. When I log in it says I am forging even though I never specified that anywhere. Is it enabled by default?
Also, when I log out I am give a choice between "Logout" and "Logout and Stop Forging". So if I choose just Logout and then shutdown the browser, the wallet is still forging?
That's right. It's enabled by default.
And if you logout, forging continues in the background, even if your browser is shut down.