What I think of.com
http://

 

From the homepage, click in the search box and enter a URL and click Think

How to enter a URL

Use the New Thought button to create a note.

Create a new thought

The note appears in its contracted (arrow) state, ready for you to give it a title. Enter a title and press Enter or click the edit (picture of icon) icon.

The change is automatically committed to the database, you don't need to save it or submit it: any changes you make are saved just as soon as you make them.

Expand to view the train of thought

Click the expand (picture of icon) icon to add more detail and explain your train of thought.

 

...just not yet. Logins will be available when we launch the next set of features. In this beta release all thoughts and thinkopes are public.