Copy URL and Title
To share a link politely, it's nice to include the page title as well as the bare URL. It would be nice if you could copy the URL and the title to the clipboard in one action.
Sometimes it would be nice to also include the selected text from the page, if any, as well.
Firefox 3.0 / 3.5
There have been a number of extensions which provide this functionality. CoLT is super.
CoLT - CoLT makes it easy to copy either a hyperlink's text or both the link and the link's text (in a format you specify). Two handy context-menu items make this possible, and don't add clutter; the items are only visible when right-clicking a link! Status: Works great. Currently using.
My custom format menu items for CoLT:
|Socialtext Wiki||"%T" <%U>|
|HTML Link||<a href="%U">%T</a>|
Here are some other extensions:
Copy URL 0.1.3 - CopyURL is a toolbar button or context menu item that will copy the currently loaded page or image to the clipboard, automatically wrapped in an anchor or image tag. Status: Preferences dialog doesn't work for a number of users including me. I was able to change the preferences by editing preferences/CopyURL.js in the extension's sub-directory, but that's a chore.
CopyTitle 0.1 - CopyTitle is a small extension for the Firefox web browser. The extension allows you to copy the title and the url of the current document, frame or iframe to your clipboard. Status: Didn't test.
QuoteURLText 1.0.9b - Quote URL Text will copy selected text to the clipboard including Page Title, Location and copy date. Status: Didn't test. From comments, it appears that you must select some text on the page so it can be copied.
Copy URL+ / copyurlplus - The Copy URL+ extension enables you to copy to the clipboard the current document's address along with additional information such as the document's title, the current selection or both. Status: not updated for recent Firefoxes. It is said that modifying the version compatibility info in install.rdf and rebuilding the .xpi allows it to work.
Copy Title 1.1 - Adds a "Copy Title" menu item to the pop-up menu. This puts the current page title on the clipboard. Status: Didn't test. Doesn't appear to copy URL.
Copy as HTML Link 2.0 - Creates an HTML link to the current page using the selected text and copies it (into the clipboard) for pasting into other applications. Status: copies URL and selected text, but not title.