This one technique can create more results than anything else. Other list-building tactics mention or include testing, but it is so important that I want to call it out and focus on it specifically.
Relying on your opinion for what will work and what won’t is great for the ego, but bad for business. For example, which one of these opt-in boxes do you think gets the most subscribers? (Note: The test was done for DIYThemes.com using the testing tool Visual Website Optimizer)
It was Variation #2, the center option. The control is on the left above.
How to test
The two best choices are Visual Website Optimizer or Optimizely. Visual Website Optimizer is free for up to 1,000 visitors/month. Up to 10,000 visitors a month costs $49. Optimizely has a free 30-day trial and then costs $17 for up to 2,000 visitors per month. It’s $71 a month for up to 20,000 visitors.