Aliasing probably goes on in E2 a lot more than we suspect: with the addition of the node voting system (tm) noding has become much more 'political' so the stakes for getting your nodes upvoted or cooled are higher. With two or more aliases you can do lots of things: you can cool and vote on your own nodes, you can draw extra attention to a writeup in chatterbox and you can downvote those nodes that directly oppose your own with double the force. Sure, you have to spread out your votes/nodes between more IDs but, I bet, in the long-term it works out better especially if you are writing unpopular nodes.