What you guys think?

How useful is google adword.Do you think it is must for today online website promotion, and selling goods and services online. recently I used Adword, and got some traffic. I have average impression for adword

Google AdWords is probably the best way to advertise nowadays, though its saturated with competition.

You ideally need a high budget to start out, and it takes a lot of testing before you start to convert and become successful through it.
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Staying out of the saturated niche's will help you learn. If you just jump in advertising ipods and laptops you will probably get killed.