I just added the FireShot plugin for Firefox. What I needed was a way to quickly make notes on a page and share those with the team... The plugin converts the page into an image and allows you to make notes on the image
Here is an example:
FireShot is a Firefox extension that creates screenshots of web pages (entirely or just visible part).Unlike other extensions, this plugin provides a set of editing and annotation tools, which let users quickly modify web captures and insert text annotations and graphical annotations. Such functionality will be especially useful for web designers, testers and content reviewers.

Tom that is cool - I can see that being very useful. I am often having to send screen shots to advertisers/ad networks about where their ads are showing up, etc. and this will help a lot.