Well for the links you supplied, JP or the moderators have probally deleted them, that's why they don't exisit anymore.
The blank page you get is probally because the server is no getting the right queries and sending back nothing. (maybe just a bug?)
Yes i have noticed this before.
AO now has pop up ads because JP needs to find someway of making money from this site, in order to support the costs of running it.
I think the one reply but no views problem has been mentioned before. I'm not quiet sure if it's been fixed though.
Cheers!