Press Hunt - Press Hunt saves you hundreds of hours by aggregating data on almost 400,000 journalists and reporters in one place, complete with their writing interests and contact info.
FIEND.fm - "Hot or Not" for music discovery: 2 hrs of tracks in 2 mins
pressfarm - Pressfarm helps entrepreneurs find journalists to write about their startups.
Pacemaker - Create and share mixtapes with friends
Anewstip - Find journalists by what they tweet
Boil the Frog - Create a seamless playlist between any two artists