isup.me is a cool page that checks whether another page is "down for everyone, or just me". Today I found my access to https://ripple.com/client/ and https://ripple.com/graph/ didn't work at all, due to "network errors".
Ripple is p2p, so theoretically it should always be up ... however it's a young project so there might be bugs, and the server code isn't yet open sourced. What's a good way to verify the Ripple network is up, or rather "is Ripple down for everyone, or just me"?