My hope would be that the money aspect may prove to favor decent contributions even long-term. Simply because there is much to loose here. Without a good reputation there is no sustainable income perspective and as the blockchain never forgets what was once posted, reputation can easily go downhill with only a few bad posts. LinkedIn is actually a good example that a network can achieve mass adoption while maintaining a consistently high quality in content contributions. Also in case of LinkedIn it is the importance of reputation that makes most users to reflect on the quality and seriousness of their contributions. In any case, I agree that personalized feeds will soon be an important feature, but it seems that the implementation is already on the way.