Browsing the Mac App store and iTunes Store can be annoying if you're used to using tabs in your web browser. You can only view one page at a time in either store, so if you want to check out a number of items, say, after you've run a search, it's click, back-arrow, click, back-arrow…
The Finer Things in Tech web site notes a nice trick to make this easier that I hadn't thought of before. Just drag icons from the Mac App Store or iTunes Store to your web browser, or on your browser's icon in the Dock. You can see most of the same information in Safari as you can in these stores, as they are simply collections of HTML pages. If you want to view multiple items in your browser, open a new tab before dragging an icon; if not, it loads the most recently dragged icon in the frontmost tab, rather than in a new tab.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20120917002101514