Its the weekend again. Here is the offtopic beat again. I was watching titanic last weekend. And read about it in wiki. Did you know it was called RMS (Royal Mail Steamer) Titanic? Adn the wiki gives some compehensive information. read along..
Application cache (appcache) is a powerful feature in HTML5. However, it does come with baggage. Many (see links below) advocated ferociously against it due to tricky issues it comes with. For someone who is just testing waters, these issues may throw them off grid. Knowing them before hand helps reduce some unpredictable effects.