Crowd source is a weird group; Definitive article on NYT

"crowd source" is a verb, so using it to label a group of people
makes the sentence a little awkward.

"crowd sourced efforts" attempts to deliver the same drive and people
but without rewriting the entire sentence fragment in a passive voice.
Merge pull request #234 from randomecho/sunlight-govtrack-nyt-post

"Crowd source" is a stilted way to refer to a group of contributors in "A Modern Approach to Open Data"