what adam (of "Hey Adam, you need to finish cluing your Midi contest entry before the deadline" fame) saw on the crosshare website in place of the "Constructor Dashboard" button
7A
technically it's supposed to be a "post on X" now, but everybody* calls it this (*sample size one)
8A
some forms might require the last four digits of these nine-digit numbers (abbr.)
Down
1D
what a plant does when you give it sunlight and water, if the plant gods don't hate you
2D
japanese noodle dish that is the 4-Down
3D
unit of measurement for farmland
4D
"wow, this crossword was the ___ crossword i've ever done in my life!" (phrase that exactly one person will say about this puzzle)
5D
courage (alternatively clued as [Innards], but that's slightly less fun)