Node.js

Node.js is a cool technology you can use to build websites.

DreamHost does not support node.js on shared web servers, as the security setup on DreamHost shared servers is incompatible with compiling or running node.js.

If you try to compile node.js on one of the shared web servers, your user will automatically be banned through grsec (taking down all the php websites that run under that user) and the server will have to be rebooted before your user can be unbanned. If you do it one more time, you will be forced to move to a VPS.

DreamHost's VPS and dedicated servers can run node.js just fine.