NewsLabs sounds cool. There may be a lot of journalists out there frustrated with the constraints of working with a big media organization and want to do their own thing. NewsLabs could create the next Arianna Huffingtons.

Data Marketplace is promising: market research firms charge ridiculous fees for their reports which are usually overkill for what you are looking for. Data Marketplace could solve this problem.

Greplin sounds cool. 500Friends sounds like it'll generate revenue straight off the bat.