This makes questions like this onethis one having three votes and there are lots of good (but not best) questions having less or slightly more.
I think "Hi, welcome to the site!" is enough to make a good feeling. The reputation is not what most of us are here for. Everyone gets 1 reputation point when he logs in.
UPDATE
I remember the first reactionfirst reaction to my very first postvery first post here. User kubanczyk noticed I was new, took his time to view my profile to check this, and made nice welcoming message. I appreciate this much more than if it were an upvote.
I would also like to get points not because I'm new, but because many people think I've done something good.
I propose that one of us puts a welcome message and others upvote this message. So if a new user sees "Hi, welcome" and notice that this comment was backed eg. by ten persons, he will see he's really welcome here.