Graham Smith, a logo designer has come up with an interesting project that he likes to call: Brand Reversions: Brand identities with a split personality.

A witty project where Google impersonates Yahoo!, Skype impersonates GTalk, Facebook looks like Twitter and Nike looks exactly like Puma.

"Some reversions will focus on two leading competitive brands such as Google-Bing whilst others be based on what I feel works well aesthetically, or best displays a certain visual identity characteristic such as BlackBerry/Flikr." shares the designer. Here are some of my favorites:

Skype-GTalk

GTalk-Skype

Twitter-Google+

Pinboard-Delicious

Nike-Puma

Motorola-Nokia

Google-Yahoo!

TechCrunch-Mashable

Mashable-TechCrunch

Pizza Hut-Domino's

Pepsi-Coca Cola

Coca Cola-Pepsi

Smirnoff-Absolut Vodka

Twitter-Facebook

Facebook-Twitter

Barnez & Noble-Amazon

Cannon-Nikon

YouTube-Vimeo

Vimeo-YouTube

Digg-Reddit

Verizon-Vodafone

BlackBerry-Flickr

Ferrari-Ford

Android-Apple

iPhone-Android