After searching for a while for a list of standard urls to reserve for your own use on the webapp you’re building, I decided to compile my own.. Starting with what twitter seem to reserve (they don’t publish a list, understandably), and adding a few of my own. If you can think of others, put them in the comments and I’ll update as appropriate.
Other things to consider are.. Reserve anything with the name of your app included (e.g. twitter don’t allow users to create urls that include “twitter”). Reserve as many urls for authentication methods as possible, I only included a couple here, oauth and openid.
Here’s a published google doc, and a csv file, text, and xls.