Impressive work! I embarked on a project with a similar problem - can you identify locations in tweets from their messages during hrricanes? People mostly don't

Impressive work! I embarked on a project with a similar problem - can you identify locations in tweets from their messages during hrricanes? People mostly don't geotag their tweets but just mention street names in non standard ways. My naive solution was to use full text search on the postgis openstreetmaps dump but if there's a more elegant solution (that's free and can scale to millions of tweets) I would love to know more!