I have been getting a lot of questions on how I did last Tuesday nights webinar on blog monetization. We used a product called GotoWebinar. It was the first time I had ever done a webinar but I was pretty familiar with the GotoMeeting stuff and its pretty much the same interface.
I really like the GotoWebinar stuff because its cross platformable so you dont have to worry about if people are on mac or pc. It just works.
I think the webinar stuff is a great way for people to sell things through education. A couple of affiliate networks are doing webinars for there affiliates (clickbooth, pepperjam). I think its a awesome platform and hopefully more people will start doing webinars.