Jacob Wright (jacwright.com) and Derek Andriesian created the service.
MyStickies was originally Derek's idea. He reads a lot of blogs and has a knack for forgetting where he read something he really liked. He mentioned it would be really cool to be able to put sticky notes on your web pages. After discussing it with Jacob a bit, Jacob was convinced that the idea was not something only Derek would want. Jacob offered the name of MyStickies to Derek for approval and the domain name was purchased quickly. They began planning and prototyping.
There were many changes along the way to make MyStickies as useful as possible. The browser extension became the favored method because it would allow for a user to get their notes instantaneously without needing to load up a bookmarklet on every page. A web-based account was decided on so that you might use and access your notes from your computer, your buddies computer, the public libraries computer, or anywhere you went.
The two worked on it part-time, starting a few things over a few times to get things right. Finally they felt it was good enough to launch January 20, 2006. They continue to work on it part-time, hoping to be able to find a way for MyStickies to pay for itself so they don't have to sell the farm to pay for server costs.