I agree. Credits wouldn't make it any more careless, only more tedious. I think only 'an all you can eat' would be a more attractive system than the current one

I agree. Credits wouldn't make it any more careless, only more tedious. I think only 'an all you can eat' would be a more attractive system than the current one. Though, it seems to me that even in the current model what is missing are very strong network effects. It would be interesting to see if adding additional incentives increases/improves sharing. For instance, what if an article becomes free after N friends read it after sharing? It might cause people to share articles that their social circles are very likely to read. Another interesting feature would be a share-once link. Sometimes you read an article that you want to share with someone specifically. You don't want to be an *ss pointing them to a paywall, so you pay the Euro 0.25 for them :). It's not only a convenience, but also a potential way to bring in new customers.