Riak users have had quite the opposite results based on talks given at conferences and videos put online. Yammer, Voxer, Formspring, Bump are all riak custome

Riak users have had quite the opposite results based on talks given at conferences and videos put online. Yammer, Voxer, Formspring, Bump are all riak customers and all have a video out there somewhere talking about how much the like riak. Yes riak and cassandra share a little bit of technology (being dynamo inspired), but most of cassandra woes seem to come from operational difficulties and not the technology theory. Riak has more of a focus on operational friendliness out of the box. There are videos and talks out there from several customers listed on Basho's site, just take a look.