I maintain a blogroll of space blogs. So far there are about 85 blogs on the blogroll. Since HTML is filtered out of messages on your blog, I can't post the link that shows how to include the space blogroll on your blog, but you can find it in my blog (scroll down and click on the image of the moon in my left sidebar). Also, I would suggest visiting Dick Stafford's private space ventures database for a much bigger list of private space companies than you have on your sidebar; you can find the link for that on my blog at the top of the Space Business list.