I often see first posts (or posts from 1 rep users) downvoted.
Presumably 1 rep users are new, and haven't had time yet to learn the workings of the site. They also won't have certain privileges, such as the ability to comment or vote.
Not knowing how the SE platform works, such users might rightfully feel discouraged and leave after their first contribution gets downvoted within minutes.
I personally try to avoid downvoting first posts (I don't always succeed :P), even if it is an answer which should be a comment or a separate question, or a oneliner with just a few words and a link.
Instead I try to leave a comment letting them know how they can improve their post, or what they can do instead (e.g. post a new question).
However I sometimes feel like my efforts are in vain when the post in question gets downvoted anyway.
Should we make an exception to the usual downvote criteria for first posts which aren't obvious spam?
If yes, should we try and direct them to where they need to go, or places such as the tour or help center?