These are my links for 17 feb 2010 through 18 feb 2010:

• Puppet is system administration – Automated. – Puppet is a declarative language for expressing system configuration, a client and server for distributing it, and a library for realizing the configuration.
  By saving you countless hours of frustration, monotony, and/or reinventing the wheel, Puppet can change your life. Here are some key points about Puppet:
  Puppet lets you perform normal administrative tasks (such as adding users, installing packages, and updating server configurations) on any number of systems, even if those systems are running completely different operating systems. Through the use of providers, Puppet takes a generic instruction from you (such as ensuring MySQL is installed) and performs the task the "right way" for each system.
  Whether you have a small, heterogeneous network of user workstations or a cluster of rack-mounted number-crunchers, Puppet can help reduce your overhead and get the everyday management of your network under control so you can concentrate on the real problems.
• Cheapest-Voip: Find the cheapest VoIP provider for the country you want to call – VoIP is offered by many providers, at different rates. The rates differ per country and change frequently. By using the form above, you can find out which provider is the cheapest at this moment, for the country you're trying to reach.

  via http://www.blogvoip.it/

• tablespace.net – Homepage for William Favorite – tutorial e reference su AIX, linux, Solaris