Microsoft Office 2010 will offer a free, ad-supported "Starter" edition, in addition to its regular, rather pricey offerings. Beta invites are already going out, and you can increase your chances at a spot by filling out a quick online survey.
By quick, we mean three minutes or less. The survey asks what type of computers you use at home, what kind of internet connection you have, and whether you've used Office in the past six months. Intriguingly, it also asks if you've used Google Docs or OpenOffice in the same time period.
Filling out the survey won't guarantee a place in the 2010 Starter beta program, but it certainly won't hurt if you're itching for a chance to give it a go.