By clicking the Homepage of Puppy I receive the message:
"Forbidden

You don't have permission to access / on this server.

Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2.2.11 (Unix) mod_ssl/2.2.11 OpenSSL/0.9.8i DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 Server at www.puppylinux.org Port 80"

What happened to Puppy?

I have no idea, but:
Oh no!

Seems hit no. 2 or 3 , googling .. puppy linux .. will do !
http://puppylinux.com/download/release-4.1.1.htm
http://puppylinux.com/download/index.html

They probably just changed the other 'URL' to something else.

.....

Here's a link to the discussion on their forum about the problem:

http://www.murga-linux.com/puppy/viewtopic.php?t=38832

It appears that it may have just been a temporary problem....
Puppy is alive and well.

http://puppylinux.org/ doesn't work again

According to www.distrowatch.com, the puppy homepage is www.puppylinux.com, not .org

It is true that the homepage changed some time ago but on http://puppylinux.org/ there is still a lot of information like minimum requirement, how to do, ...
Information that wasn't completely taken to www.puppylinux.com
It would be a great loss if this page including the wiki doesn't return.
There I had also help in german and italian,...

If you speak about DistroWatch have a look which page they offer for documentation: http://puppylinux.org/wikka/CategoryDocumentation

The diversified Puppy community has done REAL WELL in a number of areas. Puppy itself is solid and useful, plus there are numerous remasters and respins that seem to have value for a number of people.

One of the problems you do run into when you either do not have a strong primary authority or you have offshoots is that you can run into coordination problems. As Barry and the team decide how to revamp the direction they want to take it sure seems that these are among the issues that they are running into. If it were either my full time job or it led to one, I'd be glad to orchestrate all of it, but frankly, there are many who have been in place from the beginning who understand the current situation and the issues being faced better than I do at the present time.

I would recommend that anywhere from two to eight people assume control and management of the details of operating what is known as Puppy or its replacement or alternative. Having one in charge of it all and several to work on the details would be optimal. Barry clearly owns the Puppy name, so right now, this is still for him to decide.