Awesome Screenshot is a web browser add-ons to capture, annotate, and share web page that you are opening on the web browser. It support for Chrome, Firefox, or Safari. Awesome Screenshot can capture the whole page or any portion, annotate it with rectangles, circles, arrows, lines and text, one-click upload to share.
If you are a webmaster or someone who concern about pagerank and alexa rank then you want to know what is pagerank or alexa rank for this website. You can use web service that offer page rank tools by submitting websites into the web service. But this is consume much time. You must submit website and maybe enter for capcha to know web pagerank or alexa rank. Using Firefox with SearchStatus add-ons you can view pagerank or alexa rank for each website you visited
Youtube has become favorite site to visit if people want to watch video or just listen to the music. You don't need download the music and make your hard sik become full. You just need search, play, and of course good internet connections. From Youtube website, you can create playlist after login, play, pause, or control audio sounds.