As far as I know, you don't even have to have a Twitter account to vote. You just have to go to the page and click the " + " by his picture to vote. And you can vote once every 20 minutes!
So, please, go vote for Lassie! Let's show the world how much we love him.
Right now, he has [edit] 25 votes and is on this page: http://tweeterwall.mallplace.com/tw/usa/mr-twitter?page=11 (I'll update this as often as I can as he gets more votes.)
Edit again: alright, I'm headed out from work, so no more updates for a while. Just head toward the lower numbered pages if you don't see Lassie on the linked page.

