Okay, so you have a web site or blog and you want to spread the word. You also want to let people easily add the URL of your site to their browser's bookmarks and your RSS feed to the reader of their choice. In the age of the Easy Button you can't expect folks to actually click two or three times to do this, oh no. Now you need to supply them with single click functionality.

Enter AddThis.

Problem solved. No more lists of buttons and hogging precious web page real estate, now you just have one button that let's people add your site or feed to whatever they happen to be using.