Here's a great article by Paul Gerrard on what it means to be a tester in Agile and how to achieve the whole-team approach to quality.
Reflections are a powerful tool that Sherry Hsu proves by sharing with us plenty of insightful hints and pieces of advice on the testing role, the proper mindset, recommended resources and much more.
I have a problem: I don’t care about testing! I care about Quality! Yet people see and treat me as a tester.
The days of testers responsible solely for finding bugs are long gone. There's much more to our role, and Patrick Prill explained it very well.
With this clever (re)definition of functional testing, Eran Kinsbruner gives an example of why we shouldn't limit ourselves with the commonly accepted and often confusing software testing terminology.