Funny things these summer of code applications. Some of them come a very well thought out projects, others are more like cloudy ideas.
If you want to submit a proposal, and want to be successful, please put a little effort in spec-ing properly. Tangible goals are a very good thing. Good language, not really importnat, just put them in bullets if you fancy it that way.
If unsure, get to #drupal on irc.freenet.org, and ask. Mention SOC and project proposal, and you'll get attention and tlc. That is if you are applying for a drupal project, for others, well don't expect much help in that channel.
Good luck
