Justin from mobileGlu here. The idea behind mobileGlu is not to live off other people's content, we are just acting as a mobile aggregator for people's flickr, delicious, upcoming, RSS etc life online, and that relationship is one to many (i.e. one user many content), not many to many like public aggregators.
The main goal behind the project is not to leech people's content, but to act as a two-way hub between the user and the web service (e.g. allowing user's to post photos from their mobile to their Flickr account, and view those photos), and to help enable other web services to get mobilised as quickly as possible.
Hope that clear some things up?