Yury Semikhatsky has been working in the developer tools area (Web Inspector) for a while.

Daniel has made many valuable contributions to WebKit including additions to the XSSAuditor, which helps prevent reflective cross site scripting attacks, as well as numerous changes to drag and drop ensuring that WebKit complies with the HTML5 spec.

Nate got his start in WebKit with helping to upstream Javascript bindings for the Chromium port into WebKit.

Jeremy has done a lot of work on local storage and session storage within WebKit.

In addition to various rendering and canvas bug fixes, Shinichiro has been a driving force in a large number of tool improvements.

Pavel has contributed some great new features for the Web Inspector and spent a lot of time on the Web Inspector to help unfork the Chromium port.

Darin Fisher is now a qualified WebKit Reviewer.

Simon Fraser is the newest WebKit Reviewer.

Gavin Barraclough is now a qualified WebKit Reviewer.

Tor Arne Vestbø is now a qualified WebKit Reviewer.

Cameron Zwarich is now a qualified WebKit Reviewer.