This Yahoo group has had a Facebook presence for a year or so in the form of a Facebook "group". No one really uses it, probably because using the Yahoo group is easier. However, despite some of the privacy issues that have been well publicized recently, the overall simplicity of Facebook is rather appealing and it is very useful for a quick check of who is doing what, and where. The Facebook groups do not seem to be as useful because you have to drill down an extra layer or two. You have to make more of a conscious effort to actually look for the group's content, it does not seem to be quickly available when glancing at your own Facebook page.
So, I am playing around with a Facebook "page" for digitalradio rather than a "group". My early experiments suggest that the Page does show up in one's own Facebook page (if you want) , allowing an easier quick glance. Please consider become a "fan" (Facebook terminology) and testing it out. I'm not fully sure how to link to it, but http://www.facebook.com/pages/digitalradio/123270301037522 seems to work. Andy K3UK