I'm using CM9 nightly (20120712 i.e. today). I need to talk securely, without the chance of eavesdropping, to someone who also has CM9 nightly (not sure how up-to-date but not more than 1 month old). ...
So here's your Average Joe at a coffee store, using the open Wifi on his shiny new Android phone. Obviously there are the same issues with using a laptop or any other device on an open network, ...