I've set up an ideas page for Mailman in GSoC 2013:

http://wiki.list.org/display/DEV/Google+Summer+of+Code+2013

Right now it's seeded with some particularly clearly-defined ideas I received by email, but more ideas are better, so please feel free to add things or modify the page (or argue about why it should be modified here). I'll be going through my own bug queues and other emails later this afternoon.

Things I'd like to see other than ideas:

• a VM we could hand out to students to shortcut the process of setting up a development environment
• A set of simple assignments for students to try as a quick "can I work with this codebase?" test.

I'm thinking things like "add inline help to one of the options in postorius and post your code as a branch on launchpad" that aren't technically terribly technically challenging. The idea is to give the students a task they can complete and give us something to require in their applications as proof that they'll be able to work with us. It's basically "solve an easy bug and post your code" but we'll want things more specifically defined in case the queue of easy bugs isn't so hot when the students start arriving.