Test your web design in different browsers

Browsershots is a free open-source online service provides the ability to see how is a web site looks like in different browsers.
<http://browsershots.org/>

Any public web site should be compatible with different browsers and versions to be able to serve a wide rage of users.

Browser compatibly was a feature in a project I worked in since 3 years ago, I can remember how is was time, effort, and hardware consuming was. I wish we had this service since then.