Thomas Tkatchenko has tracked down RSS feeds for Are.na and I’ve pushed out new rules to allow subscription using the user and channel URLs. (Also, a fix for Instagram, thanks to a report from makeworld.)
Simply restart your browser (or desktop app) and you’ll pick up the new rules. (Or wait an hour, the rules are automatically pulled in for those who UNDERSTANDABLY don’t want to read this stupid blog.)
If you’ve never used Are.na, there are the explore and examples pages to get you started. Other Fraidycat users can be found here. (A good technique on Are.na is to use that search box at the top of the page to search for other sites you like - this should bring up lists that will lead you to other sites with close coordinates.)
So, yeah - it’s that easy. Any other sites Fraidycat is missing?