[DicIfTEx]

Add the following to your bookmarks and click it when you come across a paywall:

  javascript:window.location=%22https://m.facebook.com/l.php?u=%22+encodeURIComponent(window.location.href);

[NicoJuicy]

This doesn't always work ( i use it with my social bookmarking application. You need incognito mode mostly as well)