Peercoin is underrated. I think is has proven to be a very stable network as first of its kind.

The 2013 listing brings back sweet memories. I noticed Devcoin on the list. Devcoin still exists, although barely alive. In some way, Devcoin could be considered a kind of predecessor of Steemit: by the community for the community. Although much more loosely organised, Devcoin also had a website for writers to post articles and earn Devcoins, called Devtome. Writers and artits earned Devcoins for creating value (items/services etc).
As a matter of fact, the Devcoin community recently started an initiative to relaunch this coin. If you are interested, you can visit the official Bitcointalk thread here.