Update – check out nugetfeed.org for a more polished way to subscribe to NuGet package updates in your RSS reader!
Just a quick tip I found today – If you’re a NuGet package author and want to be notified when updates are published for upstream packages you depend, you can do so by subscribing to an OData query in an RSS reader.
For example, in order to keep protobuf-net-data in sync with the latest protobuf-net, I need to publish a new package rebuilt against the latest protobuf-net data every time they release a new version. For this I subscribed to the following URL in Google Reader:
http://packages.nuget.org/v1/FeedService.svc/Packages()?$filter=Id eq ‘protobuf-net’
Matt Wrock has a few more advanced examples of this using ifttt.com to orchestrate sending emails and tracking package downloads etc.