Firefox only: If you like to copy and paste snippets of web pages—but want to include the source URL and date and time in one shot—the QuoteURLText add-on's for you. Once installed, just select the relevant quote from a web page and press Ctrl+Shift+C (Win) or Command+Shift+C (Mac) and the selection will be copied along with the URL of the source page. Additional options allow you to include the time browsed and title of the page, as well. Advanced options let you refine the metadata added to the selection in the clipboard further. QuoteURLText is a free add-on download for Firefox browsers. QuoteURLText [via gHacks]
