Other sites are popping up anyway, some of them using the checking process to advertise their solutions.
https://lastpass.com/adobe/Maybe that non-profit guy got stopped by Adobe, maybe he had too much load/bandwidth when he was covered in the press. It's quite easy to get your hands on the full file anyway.
More than the mind blowingly bad security options taken by Adobe, what I am a bit pissed at is that I was able to make a purchase a couple of days before the hack was announced (and a few weeks after it was discovered) without any special notification by Adobe, and din't get any notification after the fact. But I actually don't remember if I changed my password, as I often use a rather strange password strategy.
Basically, what I often do for sites I don't plan to visit on a regular basis (unlike Amazon for example), is to type a random password I don't even plan to remember. When I need to log in again, for example for a purchase on Adobe's site which happens once every 1-2 years on average, I just use the lost password procedure to reset a new password, which I don't plan to remember either anyway.
(-) I need to reset the password each time, but I probably would have had to do it anyway in about 50% of the cases.
(-) I need at least one very stable e-mail address, or an address I have total control on but that has been the case for the last 20 years.
(+) I don't need to worry about an eventual leak impacting the things I use often for which I have more conventional longish passwords
(+) I don't need to worry about a leak impacting other sites I don't use often
(+) I don't need have to remember or write down anything
This being said, this remains a big issue, especially now that OS makers (Apple/MS) and essential cloud service offerings make it more difficult to avoid having multiple stable essential passwords.
From an IT security point of view, the fact that Windows 8.x and the latest OS X versions almost try to impose a local login with a cloud service password is especially worrying long term. You can spin in any way you like, this is a connection between a remotely stored password, transiting over the wire in a way that is supposedly secure today (or not, see MIM NSA and GCHQ attacks) and total control over your local machine.