"All goo.gl URLs and click analytics are public[,] and can be shared by anyone." Adjacent to a "Hide URL" button near the foot of the page display is an explanation, "Hidden URLs remain public, but are permanently removed from your dashboard" (emphasis added, 2011.09.12).
I love Diigo but would not recommend it for students because of the social networking aspect. WebNotes allows students to highlight and add sticky notes to webpages and then generate a pdf or html report or send the page via email or permalink.
Nick Peachey blogs: "It enables you to quickly and easily create your own Word Search Puzzles and embed them into your blog. (To mark answers) Just click on the first and last letters of the words when you find them.
He warns us: "I would prefer to be able to produce Word Searches that don't have the words included so that students have to think a little more around the topic and mentally revise their existing vocabulary on the topic. " I agree 100%
AlternativeTo let you find new Windows, Mac, Linux and online software based on applications you already know instead of useless categories. We make each application into a category.