OpenID notepad is a _very_ simple, online notepad application that only requires an OpenID to use. I wanted to create this application because I thought it would provide an easier way than emailing myself random notes, or some website I wanted to visit later, etc.
All notepads are stored in plain text, in a hard-to-guess URL – however, I would strongly advise against storing any kind of sensitive information. Just use it for notes!
Check it out here: http://brettshaffer.com/notepad/
I did not code the entire notepad. I used a PHP OpenID library from openidenabled.com, and adapted a php notepad snippet I found somewhere.. but can’t seem to find the link at the moment. If you recognize it, let me know and I will give credit where it is due!