Whenever you prepare for a presentation or report, you Google it, copy from different sources and then paste it. It took a considerable amount of time to copy and paste the data if you have large number of sources. Also it would be a great help for bloggers .Select text on any web page and it will be automatically copied to the clipboard. It works in much the same way as does Trillian or mIrc. Paste on middle click into textboxes, the url bar, and the search bar.
Select some text. Right click on it and see the autocopy content area context menu item filled with usefull features. (old users of autocopy will want to turn this on. In the options page look for "Content Area Context Menu Item"). You can undo a copy; there is a clipboard history of up to 10 items; paste to the search or location box with a click of the button; search for and open in new tab for when you select a text only url. Plus a handy append url to clipboard feature that will make sure your quotes can always have a reference.