April 2008 April brought several add-on reviews: Abduction – an extension for taking screenshots within the Firefox browser. Domain Lookup – added a context menu item to check the availability of domain names based on the highlighted text. New Tab Homepage – when opening a new tab, your home page loads instead of a blank page. OpenDownload – adds an ‘open’ option when clicking on a download link., This feature is standard in IE and most other browsers. RetailMeNot –  automatically alerts you if the e-commerce site you are visiting has coupon/discount codes available. Three new Get a Mac ads…