MyStickies
MyStickies is a web-based sticky note service. With MyStickies, you can place notes on any web page you visit with a simple Alt Click Drag. You can remember what was important about that page, you can mark a page to return to later, and you can organize your information. You have your own area on MyStickies.com that you check out your notes, modify them, and return to the pages you placed the notes. Sign up for an account now.
Future Plans
Because MyStickies is web-based, future features such as sharing a note with a friend who also has an account is possible. You will eventually be able to see pages across the web which received the most sticky notes for a given day, week, or month, and be able to "cast your vote" on which pages are important by puting your own sticky notes on pages.