Efficiency: drag URL or tab within and amongst browsers

You can click on the icon of a webpage that you are visting, to another browser, or open it in a new tab by dragging it to the Tab area.

This works within* a browser, and amongst** browsers! Moreover, you can also drag them amongst browsers, e.g. Firefox, Flock, Safari, SeaMonkey Navigator, and even IE (Internet Explorer) - but, not Opera.

* within browser example:

** amongst browsers, e.g. from Firefox to Flock:

Blogged with the Flock Browser