The developers are a bit accounting-nerdy, and it has lots of graphs/etc which I think would appeal to the HN crowd.

It's also very flexible. One example I can think of, my friend installed it on his wife's smartphone so she could record spending on groceries wherever she was. But my wife doesn't like this level of monitoring so I just give her a wad of cash each month and enter that as a general "cash for groceries" entry.

I've also seen people in the US say good things about Mint.com, which was not available to me here in Japan.

Normally this would be a good place to put my own 10%-off referral link. Instead I'm going to give a link to a forum thread where you can get 10% off AND someone else will then use your link:

http://forum.mrmoneymustache.com/reader-recommendations/43-d...