Perhaps we shouldn't be giving our review data to companies like yelp that lock it up then. The user certainly doesn't gain anything from their contributions being sequestered.
Because it sounds like a pretty good idea. Freely distributable attributed reviews under non exclusive licence is way cooler than a db full of yelp scrapings.
Wouldn't seem fair if Yelp did all the work and any app or platform can simply piggyback off of it and present it as their own, or obscure where it came from.
If a user contributes to any platform, the information should be open for all to use. Including FB, instagram, or any review site.