While we're on the subject of voting etiquette, particularly of the self voting kind, there's a new bot on Steemit who only upvotes comments...
...but he won't upvote your comment if you've already self-upvoted it!
He even goes so far as to say that you can go back and upvote your comment after he's upvoted it, and he won't retract his upvote.
So I think it's settled: Upvote your own blog posts, but let someone else get first dibs on your comment curation rewards. You can upvote them... but later (maybe on day 4 or 5).
I'm not about to argue with a bot!