A new hack allows anyone with an iPhone or with just firefox to view magazine online for free including playboy and penthouse. It comes from Zinio Labs who are experimenting by making available free magazines available usually for iPhones only, but with a quick hack you can view them on Firefox as well.

If you already have an iPhone, just head over to http://imgs.zinio.com/iphone. Otherwise…

1. Open up Firefox
2. In your URL bar just enter “about:config”
3. Right click anywhere and click new string
4. Enter the prefernce name:: general.useragent.override
5. Now you need to enter in a “string value”. Use,” Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420.1 (KHTML, like Gecko) Version/3.0 Mobile/4A102 Safari/419 (United States) ”
6. After confirming by hitting ok, you’ll now have an iPhone browser.

Scroll over to http://imgs.zinio.com/iphone and read your free magazines!

How to reset?
Go back to that string general.useragent.override and click reset. That is all there is to it.

Source: ISmashPhone