Among other features that Opera has is the right-click Paste and Go option when you paste a link into the address bar. Itloads a site automatically when you paste the URL into the address box. The same applies to search, just paste the search term and the search runs automatically without the need to hit “Enter” or the Search button. Firefox does not have this feature and I missed it dearly.
Paste and Go is a simple Firefox add-on which adds the functionality know from Opera to Firefox.It’s not quite as elegant as the Opera implementation in that u need to use Shift Ctrl V to paste and go rather than just Ctrl V but, nonetheless, it will save you time every day.
The add-on is experimental, so you will have to login before you can download the extension.
Download Paste and Go Firefoxaddon