Development/Summer of Code/2012
This year Robert Kaye, Oliver Charles and Kuno Woudt will probably be amongst our mentors. That's ruaok (Robert), warp (Kuno) and ocharles (Oliver) on IRC, if you want to come and speak to us first. Some potential mentors are listed by each project; this is far from a normative list, but it might give you somebody to ask about the project.
Repository for Creative Commons-licensed reviews
Read-only, browser-oriented site
There's been some discussion of implementing a site better geared toward casual browsing users, rather than editors. This is very open-ended at the moment, but some likely issues are in terms of maintainability (potentially two codebases!?), what exactly needs to be shown, effect on the existing site, etc.
Currently, MusicBrainz stores only a country (with various entities), based on a current ISO standard list, which obviously doesn't tell that much about locations, especially for releases, artists, etc. that happened well before the establishment of current country boundaries. Better location support could be implemented a lot of different ways and take a lot of different forms. It would probably make sense to also create an entity type for its lower tier (studios, venues, etc). Talking to projects with location lists, like OpenStreetMap, might be useful for this.
Proposed mentors: nikki
musicbrainz-server doesn't currently run with any translation, although we have some partial stuff set up. It would also be nice to have some pretranslated message catalogs to be able to hand off to applications like Picard or Riker once it exists.
Server Internationalisation links to relevant transifex, language-specific translator pages, and such.
Internationalization is a very old discussion of issues re: internationalization; some may still be useful.
Finishing an iPhone app
Proposed mentors: jdamcd
We had an attempt to create an iPhone app during GSoC 2010 that didn't ultimately result in a final product. We'd love to have one, though.
Extending the usefulness of collections
Proposed mentors: ocharles
Collections might be much more than they are now. Allowing them to work as release subscriptions and allowing free text fields come to mind.
Before you dive in and send a proposal to us through Google, it's a good idea to take some time and learn about the MusicBrainz community. At MusicBrainz we pride ourselves for having a strong community - most of us know each other in same way, and some of us know each other face to face from development summits.