Are there any plans to allow us API users to tap into sign in/authentication? I'd really like to be able to use my credentials as a sign in method for my creations!
It's not documented, but there is an endpoint used by the Boxee/Roku/etc apps that lets you trade login credentials for API keys.
The basic flow is to hit giantbomb.com/boxee, log in, copy the code, then GET giantbomb.com/validate?link_code=[code], which should respond with an API key.
You could potentially hit a login URL and then scrape that page to make it look OAuthy, but to my knowledge there are no short-term plans for a more robust authentication system.