Mapping del.icio.us with Anthracite and OmniGraffle Several people have asked me how I produced the visualizations that I used in my talk on del.icio.us. While those visualizations were constructed with a rather eclectic mixture of homebrewed code, assorted applications, and a good bit of elbow grease, I decided to put together a tutorial for people who might be interested in this type of visual exploration, but are not inclined to write custom Perl code to do so. Hence, I have selected a combination of two very nice applications for Mac OS X - Anthracite and OmniGraffle - to produce similar visualizations. Neither application is free, but both have free trial periods, should you be inclined to check them out.
Pearltrees Pearltrees refers to itself as "a place for your interests". Functionally the product is a visual and collaborative curation tool that allows users to organize, explore and share any URL they find online as well as to upload personal photos, files and notes. The product features a unique visual interface that allows users to drag and organize collected URLs, and other digital objects. that themselves can be further organized into collections and sub-collections, (URLs). Users of the product can also engage in social/collaborative curation using a feature called Pearltrees Teams. Pearltrees was founded by Patrice Lamothe, CEO, Alain Cohen, CTO, Nicolas Cynober, Technical Director, Samuel Tissier, Ergonomy/UI and Francois Rocaboy, CMO. History Development of Pearltrees began in 2007.
Social bookmarking Delicious homepage in October 2012, an example of a social bookmarking website. Common features In a social bookmarking system, users save links to web pages that they want to remember and/or share. These bookmarks are usually public, and can be saved privately, shared only with specified people or groups, shared only inside certain networks, or another combination of public and private domains. Partners with StumbleUpon Don’t you love StumbleUpon, the discovery engine that helps you find the best of the web so easily? We have partnered with StumbleUpon to create the StumbleUpon featured Email App that allows you to keep your friends updated on your discoveries and get you new followers simply by emailing. Now you can share your latest great discoveries not only on StumbleUpon but also in every email you send! Get StumbleUpon Email App (Firefox / Chrome).
Best Firefox Addons Advertisement Firefox is famous for its addons, and for good reason: they can make your browser do just about anything. But which addons are the most useful? Here are the addons we think are best, what they do, and where you can find them. Enjoy! Comparison of browser synchronizers The following tables compare general and technical information for a number of web-based browser synchronizers . Please see the individual products' articles for further information. This article is not all-inclusive or necessarily up-to-date. Unless otherwise specified in footnotes, comparisons are based on the stable versions. List of social networking websites This is a list of major active social networking websites and excludes dating websites (see Comparison of online dating websites). For defunct social networking websites, see List of defunct social networking websites. This list is not exhaustive, and is limited to notable, well-known sites. The Alexa website rankings are from various time periods.
The strange case of The Pigeon-hole Principle (EWD 980) If you come to think about it, The Pigeon-hole Principle presents a case that is curious in more than one respect. It has a remarkably high status: it has a special name, under which it is well-known; Ross Honsberger even calls it "A fundamental tool of combinatorics". It is surrounded by some mystique. Proofs using it are often regarded as something special, something particularly ingenious. This feeling of awe is, for instance, nicely reflected by Honsberger when he concludes one of his examples with "(Another triumph of the pigeonhole principle.)". Its usual formulation is —as we shall see in a moment— unfortunate.
Best Chrome Extensions On this page, you will find the best Chrome extensions for all your browsing needs. Using the right Chrome extensions can completely transform your online experience, and make your time on the Internet much more productive and interesting. We’ve made the effort to categorize the extensions and chose only those we believe to be the best ones and which will most likely be useful to you. A perfect tool for students/researchers and one of the best Chrome extensions for organization. Diigo lets you highlight, share and save web pages.