Social networking and voting site Digg is rewriting its underlying software infrastructure in an effort to improve performance and scalability. Part of that effort involves moving away from the MySQL database that has helped to power Digg since its creation. In MySQL's place, Digg is going with an open source NoSQL non-relational database called Cassandra that was originally created by Facebook. As part of the migration effort from MySQL to Cassandra, Digg developers built a tool to help move data from one database to the other. The tool could soon be open source, helping other developers make the same move.

On Sunday at SCALE 8x, Inkscape developer Jon Cruz presented a talk entitled "Why Color Management matters to Open Source and to You," putting the need for color management into real-world terms for the average Linux user, outlining current development work on the subject at the application and toolkit levels, and giving example color-managed workflows for print and web production. Color management is sometimes unfairly characterized as a topic of interest only to print shops and video editors, but as Cruz explained at the top of his talk, anyone who shares digital content wants it to look correct, and everyone who uses more than one device knows how tricky that can be.

Open Source For America (OSFA), an organisation created to promote the use of open source in government, has denounced the IIPA's "Special 301" call saying it is irresponsible and misleading. The International Intellectual Property Association (IIPA) had called for the US Trade Representative to place countries such as Indonesia, Brazil and India, on a "Special 301" watch list, normally reserved for dictatorships or repressive regimes, because the governments advocate the use of open source. OSFA say that this request is "both irresponsible and misleading in its characterisation of OSS".

The Linux Foundation has announced sessions for its Collaboration Summit, scheduled for Apr. 14-16 at the Hotel Kabuki in San Francisco. This year's event features a full-day workgroup on MeeGo, as well as discussions of Linux topics including toolchain, cloud computing, printing, filesystems, ISV porting, and open source compliance.

Firefox 3.6—the latest version of the popular open source Web browser—was officially released in January, but there are still many users who have not yet updated. In an effort to increase awareness about the availability of version 3.6, Mozilla announced today that it will start rolling out upgrade notifications to its users through the browser's built-in update system. According to Mozilla's statistics, the new version has already been downloaded over 100 million times since its release in January. That doesn't include the significant number of existing users who have already migrated to 3.6 by using the browser's built-in upgrade system without being prompted to do so.

Today seems to be a very good day for GNOME photo managers. After Shotwell 0.5 release, gThumb got a really nice extension which many of you I'm sure have been waiting for. Read on!

After twitter, now is Digg who decided to replace MySQL and most of their infrastructure components and move away from LAMP to another architecture called NoSQL that is based in Casandra, an opensource project that develops a highly scalable second-generation distributed database.

Google CEO Eric Schmidt, speaking at a conference in Abu Dhabi this week, confirmed that the Chrome OS operating system is on track for delivery in the second half of this year. While we already know that it’s headed for netbooks, there are new reasons to believe that its brightest future may be as an adjunct OS on netbooks and tablets. Google is taking several big gambles with its upcoming OS, not the least of which is that it will require users to work with all data in the cloud. That will rule out countless applications and utilities that are, in some cases, beloved to users, and there is a good chance that Google’s cloud-only gamble could backfire. But what if Google adopts an “if you can’t beat them, join them” strategy with its Linux-based operating system, and oversees its shipment on netbooks and tablet devices alongside other OSes? If the idea sounds far-fetched, check out the video below from Mobile World Congress, in which Freescale shows a $199 tablet computer concept that runs Chromium OS (the open-source core of Chrome OS), Linux and Android.

Virtual Network Computing (VNC) allows you to log into a full desktop on a remote server (as opposed to just opening windows on your local machine, as with X11 over SSH). It can be very useful, and it's very fast to set up.

You can use a dedicated application like FBReader or Calibre to read and manage ebooks on your machine, or you can do it without leaving the convenience of the Firefox browser courtesy of the EPUBReader extension.