[pbhjpbhj]

For me it stopped working several years ago and wouldn't ever return answers for queries. I futzed about with it to try and make it work; came back a few times over a couple of years as I had been a big fan. Just assumed they'd killed it somehow. Mentioned it on HN and others said it worked. For some reason it works again for me now -- it not working allowed me to discover Geogebra, which was nice and served a lot of my previous uses for WA.