Comment by nessence

The patents involves routing messages with emphasis on followers. Everything previous I'm aware of has been multicast based or address based, like email or mailing lists. Most internet and application-layer protocols are destination based. Where is a protocol that says "Route this message based on who is interested in the source."? All I find is "send this message there, based on X, or, send that message here, based on Y"; both destination based. Would be interesting to know or hear of past protocols which are more similar to twitter's patent.