oh one thing and im not sure if its piefed or all the forum type front ends but like there is very little traction in pathfinder and startrekonline. there is a bell icon that you can activate to get notified about all posts. its been around a while but my brain did not take it in. Its massively good for niche things with few posts but you don't want to miss any. The other thing is the wikipedia guy has a thing called trust cafe. its claim to fame is you can rank everything and your feed will populate based on rankings. so basically everything defaults to 50 and you can rank it 0 to 100. people, communities, individual posts. so basically its an algorithm but it uses your choices for the weights. I would be using it but its not federated and I do like the philosophy around no central control. Hope you find what you want out there.