[mindcrime]

Depends on which data you're talking about and what the purpose of sharing it is. If it's a catalog of items for sale on an e-commerce site, then sharing that data widely - in order to make those items more discoverable - might be just what a company wants.

[matei]

True. This means that the result will be just improved vertical searches of products which is kind of what price comparator sites already do pretty well these days.