You can do it more than once too!
Hi there, before you ask away, just a few quick things.
If you ask me for advice and you're on your account, sometimes I'll publish your question if I think what I answered will help others.
Of course, if you'd rather have me answer it privately, just say so at the end of your question :)
And to anyone who's asking anonymously but you still want to keep track of the question, just give me a random (somewhat unique though) word and and I'll tag it as that, and you can search tumblr for the tag.
Thanks guys! :)