There are extensions to "Namecoin", a bitcoin alternate chain, that does things ...

		doublec on Aug 17, 2012 \| parent \| context \| favorite \| on: Twitter sets max user caps for 3rd party clients a... There are extensions to "Namecoin", a bitcoin alternate chain, that does things like this. For example: http://dot-bit.org/forum/viewtopic.php?p=2273