To open a new tab using the scroll wheel, simply click the scroll wheel on the link you wish to open, and the target will appear in a new browsing tab.

Well a quick and easy way to close a tab (without misclicking) is to use the scroll wheel on a standard mouse. Simply mouse over the tab you wish to close in the browser tab row and click the scroll wheel. It works in both Firefox and IE7, the two most popular tabbed browsers.