The site is fascinating.
First of all, KnitPro itself is a web application that translates digital images into knit, crochet, needlepoint and cross-stitch patterns. Just upload jpeg, gif or png images of whatever you wish--portraits, landscapes, logos--and it will generate the image pattern on a grid sizable for knitting, needlepoint, cross-stitch and crochet patterns
KnitPro is "based on the tradition of pre-industrial craft circles who freely shared patterns and passed them down from generation to generation." MicroRevolt uses knitPro to make "logoknits"--knitted garments with the logos of sweatshop offenders, which out and shame these offenders. See some Logoknits pictured here.
From microRevolt's blog, I also found out about Stitch for Senate, another activist project in which knitters make helmet liners for their state senators. US knitters submit helmet liners along with testimony about their Senators' positions on the war in Iraq. Photos of helmet liners and testimonies will be posted on the website, and the helmet liners will be presented to all 100 senators when all are completed.
Finally, there is the Needlecraft Art Show which features some projects made using the knitPro application, and the patterns for each are available from a link within the Show: among others, you'll see a crocheted Snape Graph-ghan, a crocheted Plant Ovary, bomb-hugger cross-stitch, a Fender Knit Guitar, a Kurt Cobain Laptop Cover, and a needlepoint recreation of a spacesuit patch for the international communist space program based in the former USSR, Interkosmos.