I think Ethereum (as in its contracts) is interesting, there's just too much get rich quick fud, SNR too low, for me to confidently be 'actively interested'.

Some kind of novel things could be done with it, like that distributed storage thing is sort of interesting. There's a peer to peer betting thing based on (somewhow the outcomes are available to the program?) it I saw on HN a while ago which is sort of interesting.