My Dad used to work for IDRC (www.idrc.ca) and he told me a story about one of his earliest (and happiest) development projects. It's very simple: broadcast actual market price information over radio to farmers in remote rural African areas. In this way, the farmers had enough information to tell the middle man to stuff it when they were offered extremely low (< 1%) of market value for their food. Their wages increased ~10x over the next season.

tl;dr: information symmetry is good for the end of the chains (initial producers, end consumers)