RSS Aggregation & Opener channels!
For example, the guy with the "spirituality" topic just does Buddhism. From what I can tell. Sure, that's spirituality to him -- but to many of us it's broader.
Some kind of opener, Wiki / crowdsourced channels, that just take in RSS feeds -- updating automatically, in other words -- might do better. Because the crowd will cover the topic named better.
The online magazine idea is great... I support it fully. However, what the web needs (I think) is an RSS aggregator platform that people can get to -en masse-.