Definately.
steamprofile.com uses the Steam OpenID software that allows you to login to Steam via our site. This only gives us two things, your publicly available Steam ID and your current Steam friends handle.
It does not give us your username, password, or any other sensitive info.
Nope.
Not a chance.
This in no way connects to your games, or your steam account directly. It only retrieves two pieces of info and gives you a cool looking badge that you can embed in forums, blogs and anywhere you'd like!
Yes!
With a donation to the site, you can design a custom background for your image, and have that image hosted with us for a cool, custom branded badge. You can use this image to design your custom background:
Anything you're able to donate is appreciated!