So, I'm writing a response to a question. I want to mention some of the bad old days of Programmers.SE and Stack Overflow.
Why can't I include
"73382/" + two one three nine six three in my post?
Do I need to blame gnat for this?
There was a bit* of spam on MSE earlier, which sources report was hastily stymied by check for toll-free-like telephone numbers, of which
82/2 could be a variant.
I had a similar issue trying to link to a tweet earlier** where the ID contained a sequence starting with
866. I ended up using a URL shortener (ugh) as a workaround.
I imagine this isn't necessarily a permanent restriction, or if so not one that will be implemented in such a heavy-handed way, but that's the reason for the inconvenience currently.
*For definitions of "bit" that mean multiple posts every few minutes
**I actually had to modify this URL too, sigh…
As Tim guessed, I tried to put up a black list to stop the flood of toll-free-like phone numbers.
It succeeded in that, but unfortunately, I had to cast the net quite wide given how ingenious spammers are when faced with such blocks (changing separators, adding whitespace, using I for 1 and S for 5 etc...).
It was unintended to catch out others with this - sorry.
I've removed the block for now, as it hasn't been as effective as I had hoped, and has had a bad consequence of blocking valid posts - sorry.