Newsgator, Greg Reinacker's primarily Outlook-based RSS/Atom Aggregtor, raised a Series A from Mobius.
There is a great deal of investment activity going on around the fringes of RSS. Expect more announcements within the next month. What you are beginning to see is the impact of companies founded on spec early in the market's development that leverage the open source paradigm shift where the network is the market. If you think this space is interesting now, just wait for the impact of form following funding.
Congrats Greg!