I don't think it's the fact of charging money that makes the difference. The creator of Instapaper did also charge money for the app itself (I don't know curren

I don't think it's the fact of charging money that makes the difference. The creator of Instapaper did also charge money for the app itself (I don't know current owners, but they still probably do). To be fair I also don't see the difference (I mean regarding legality) between this new service and Instapaper.