Archive for April, 2009

links for 2009-04-27

Monday, April 27th, 2009

links for 2009-04-24

Friday, April 24th, 2009

links for 2009-04-23

Thursday, April 23rd, 2009

links for 2009-04-22

Wednesday, April 22nd, 2009

links for 2009-04-21

Tuesday, April 21st, 2009

links for 2009-04-20

Monday, April 20th, 2009
  • "The Mine! project is about equipping people with tools and functionality that will help them:
    1. take charge of their data (content, relationships, transactions, knowledge),
    2. arrange (analyse, manipulate, combine, mash-up) it according to their needs and preferences and
    3. share it on their own terms
    4. whilst connected and networked on the web."
  • "De cursus Logica in actie introduceert op toegankelijke wijze de kernbegrippen van de logica en de belangrijkste logische systemen, zoals propositielogica en predikaatlogica. Deze cursus met een studielast van 25 uur laat ook toepassingen zien in de informatica, wiskundige bewijzen en speltheorie. De auteurs streefden niet naar volledigheid in thema’s en interdisciplinaire connecties. Wel wilde men de actieve lezer voorbereiden op de vele mogelijkheden die met enige kennis van logica zichtbaar worden want de logica is verbindend thema tussen alle disciplines: alfa, bèta en gamma."

links for 2009-04-19

Sunday, April 19th, 2009

links for 2009-04-17

Friday, April 17th, 2009
  • "Robots.txt has been with us for over 14 years, but how many of us knew that in addition to the disallow directive there’s a noindex directive that Googlebot obeys? That noindexed pages don’t end up in the index but disallowed pages do, and the latter can show up in the search results (albeit with less information since the spiders can’t see the page content)? That disallowed pages still accumulate PageRank? That robots.txt can accept a limited form of pattern matching? That, because of that last feature, you can selectively disallow not just directories but also particular filetypes (well, file extensions to be more exact)? That a robots.txt disallowed page can’t be accessed by the spiders, so they can’t read and obey a meta robots tag contained within the page?"
  • Eran Hammer-Lahav compares "Sign in with Twitter" versus Facebook Connect (on is based on standards, another isn't) and sign in with Twitter versus OpenID: the first makes sense as additional _identification_ on top of already existing authentication. Or: It only makes sense to add the button if you have implemented Twitter Oauth and really do something with Twitter functionality. If you just want anyone to log in, use OpenID.
    Yet: Twitter is not an OpenID provider yet, so a lot of people will implement this as an extra "proprietary" OpenID…
  • Could become a popular alternative to signing in with Facebook Connect, Friendconnect or OpenID.
    Just unclear to me why not become standard OpenID provider – OpenID popup also is just one click…?

links for 2009-04-16

Thursday, April 16th, 2009

links for 2009-04-14

Tuesday, April 14th, 2009