We’ve talked about Google SideWiki and other methods for “Writing in the Internet’s Margins”, but what about some of the other web annotation services out there? This post talks about ...

I am not a big fan of Web annotation services that let people add their own virtual Sticky Notes or comments to Web pages for others to see. But Web annotation is back with the launch today of ...

Web annotation tools like Genius and Hypothesis let you add notes to any page on the internet. Will they become tools for serious discourse, or end up as a mostly ignored layer of digital graffiti?

Collaborative annotation of web pages is something many people are working on. The newest entrant in the field, Fleck, is launching tonight at the ...

W3C standard annotation is a fundamental upgrade to the web that will bridge information silos and enable far easier content sharing and reuse ...

Maha Bali shares her experience learning about Hypothes.is for web annotation and how she plans to use her favorite feature: public annotation ...

Yet another web annotation service is launching today. WebNotes is releasing virtual highlighting and sticky-note tools designed to help people track and annotate online content. The tools let ...

Annotation service now has a professional version for users who want to mark up PDFs along with normal Web pages.

Reframe It says Google's Sidewiki service is too close to its own Web annotation service for comfort. Reframe It CEO Bobby Fishkin argues that Sidewiki's features mimic Reframe It's right down to ...

Annotation website Genius wants to let its users leave commentary on the entire internet. But plenty of people hate that idea.