A lot of people have figured out that you can use AO3 to upload a placeholder

I may be slightly guilty of that...once or twice.

In both my recent cases, there was no story uploaded. I think one was a person who'd been given an extension and then bailed and the other gave up at the last legit second.

I try to write the kinds of letters I'd like to be matched on. People have so many different approaches to writing that it's impossible to write a letter that would please everyone.