Software developer Alibre has an interesting challenge for engineers: The company is betting that its Alibre Design Professional can help you do your design job, and if it falls short in any project, Alibre will pay you $500. It's part of the company's strategy to prove the software's production robustness. Certain conditions apply, of course. For example, you can't try to use the software for features that it doesn't have. Check out www.alibre.com for details.