Google AdWords has the best system for getting fast and clear feedback from your ads. You create 2 ads that rotate evenly so they are viewed equally by your visitors. The data you gather helps determine the potential profitability of your campaign.

1. Fast feedback

You can set up a new Google AdWords campaign and start receiving impressions and clicks to your ads almost immediately. It will depend on the popularity of your product and how well your ad was written. By split testing 2 ads you'll soon discover the winner.

2. Improve Click Through Rate (CTR)

The purpose of split testing is to always write a better ad then test it against the best one you have. By repeating this process you constantly improve your click through rate.

3. Save time

If you just ran one ad you wouldn't know if it was a good one. Split testing your ads saves time because you quickly discover if your campaign will be make money.

4. Reduce Cost Per Click (CPC)

Google rewards you for improving your ads. If the ad tightly matches your keyword and landing page you'll get a higher CTR, more conversions and a better quality score.

5. Improve writing skills

By constantly rewriting your ads to find the one that receives the most clicks and conversions you improve your writing skills. Over time you'll find it easier to write winning ads.

6. Helps you to think like your customer

One of the keys to writing an effective ad is to get inside the mind of your customer. Ask questions like "what pain is he feeling", or "what frustration is he experiencing" then address that emotion in your ad.

7. Improve conversions

Conversions improve by writing better ads. With split testing you quickly discover which ad is performing the best. You then write another one to try to outperform the previous one.

8. View the effect of small changes

Here are some small changes which can greatly affect the CTR of your ad:

• Capitalization
• Include keywords
• Order of lines
• Use of synonyms
• Use different display URLS
• Punctuation

The winning ad receives the highest CTR and conversions. Use your winning ad as a model for creating ads for other profitable campaigns.

10. Improve results over time

Sometimes you need to write many ads to find one that receives a high CTR. Study the ads of your competitors that have been running for a long time. Their ads are obviously doing well otherwise they would be wasting a lot of money. By constantly improving ad quality you'll outperform competing ads.