We actually had a discussion about this and it turns out there are some people that have ethics issues around voting up their own ideas. For that reason we decided to not link the act of creating an idea with an auto-upvote.
It sparked a pretty good conversation.
"Ethics issues"? What ethical system is this?
EDIT: The more I think about this, the more it's got me stumped. In my ethical system it is UNETHICAL to create an idea you are unwilling to vote for. Either you support the idea or you don't. If you don't support the idea, then don't create it in the first place.
Yeah...I gotta agree with Shawn.
I think the thought process was that the idea author was interested in getting a sense of what the community thought of the idea without their own input.