When I think about the cottage community of hardware, software and other related things popping up based on Skype, I think of the world around eBay which has sprung up and how large that has become.
Skype is basically in the same mindset, and, when I read posts like this on SkypeJournal about items like the Skype toolbar and start to think about other developments I know about, it makes me wonder just what Skype will be in a few years, beyond simply "my Internet Intercom."