Hum yes, some of them are selling access to their firehose or subsets of it via PubSubHubbub feeds! For example it's available to any Superfeedr hosted hub :

Hum yes, some of them are selling access to their firehose or subsets of it via PubSubHubbub feeds! For example it's available to any Superfeedr hosted hub : http://blog.superfeedr.com/publisher-callback-and-track/ http://blog.superfeedr.com/publisher-callback-and-track/ and we do it for a few of them. Again, having some feeds that can be accessed for free doesn't mean that some others are not subject to fees or more complex TOS :)