Zwibbler.com is a drop-in solution that lets users draw on your web site. A/B testing is used far too often, for something that performs so badly. It is defective by design: Segment users into two…
Save highlights in Reader View or with our Chrome extension.
This your link? Claim it
Every day we pick 7 links from around the web that make you smarter, tailored to your interests.
Or sign in with Twitter or Google
Have an account? Sign in
Not on Refind yet? Sign up