On the other hand, decentralised filtering out of objectionable content might go hand-in-hand with replicating and thus preserving the most valuable content. Empirically, 90% of the content in most decentralized systems (e-mail, the Web etc.) is worthless spam that 99.99999% of users or more (a rather extreme majority if there ever was one) will never care about and could be eradicated with no issues whatsoever.