Also please read these helpful tips:
------ Visual representation guidelines - The new age of visual identity -----
Web 2.0 graphic design style was introduced in 1998 - early 2000's. It was a glossy look, with lots of gradients, bright shiny 3D feel, abundant in reflection effects.
After 10 years of evolution brand identities have changed, entering in a new era and eliminating the web 2.0 older style.
From a couple years ago all the biggest companies have changed their logo to keep up with the times.
In 2013 effective logos are simple and recognizable, using solid colors, without multiple gradients, shadowing and shiny reflections!
Because those companies that do not adapt to modern visual changes often lose the competitive edge necessary to attract customers.
2013 logo examples:
http://tinyurl.com/qh3mcr5