Usability 
The latest revision of Popular Science magazine's mobile site sports a search-able blog style timeline of recent articles and photo features from the publication's desktop site.
Although the site is attractive, usability is hurt by non-functional page elements. Examples incude the "Browse" drop down at the top of every page and a similar "Comments" drop down at the end of each article, neither of which respond to taps in any of the browsers I tried, including the Android Gingerbread browser, Opera Mini 6.5 and desktop FireFox and Chrome
Popular Science is a 139 year old US based monthly print magazine covering all areas of technology from a layman's perspective. The emphasis is on automobiles, electronic gadgets and earth and space science. Articles are generally well researched and profusely illustrated. In addition to the print magazine, mobile and desktop[ web sites, Popular Science publishes a digital edition for the iPad that is one of the top sellers in the App Store.