The web went social long ago with such wonderful advancements as e-mail and, more recently, communities like Delicious. As a natural evolution of these practices, new services allow users to research ...

Annotation service now has a professional version for users who want to mark up PDFs along with normal Web pages. Josh Lowensohn joined CNET in 2006 and now covers Apple. Before that, Josh wrote about ...

In 1999, Eng-Sion Tan and two friends launched Third Voice, a browser plugin that would let anyone make annotations on webpages. The intent was to encourage freer speech on the internet, but many ...

Would researchers scrawl notes, critiques and comments across online research papers if software made the annotation easy for them? Dan Whaley, founder of the non-profit organization Hypothes.is, ...

Earlier this year, a group of climate scientists were outraged about a Wall Street Journal editorial. In an earlier era, they might have written a letter to the editor, or meekly submitted their ...