RSS is awesome. And great to see new innovation like this. The notion of RSS Brain best features seem to depend on having already discovered feeds. Feedly, for example, has a discovery experience to find new feeds which is helpful. If I already had a bunch of feeds RSS Brain might be right… but I think I’d still miss an easy way to not just find related articles in similar feeds I already subscribe to. The magic of some competing products is finding whole sources or feeds related to topics I’m already interested in.