Market Research

AdWords Helpers

The Definitive Guide to Google Adwords is a must for those of you who have been struggling with Adwords for a while but have not had much success.  Read the full review here.

Adword Analyzer  is a great piece of software that  allows you to type in a search term and generate a list of related search terms together with the total number of searches and the number of Adwords and Overture campaigns for comparison. You can do this manually, but automation will save you a whole lot of time. Read the full review here. 

Adsense

Adsense Gold
Adsense Gold is the tracking script that you'll need to test and track all your Adsense campaigns. This tool is simply indispensible! Also check out the bonuses that come with this product.

Traffic Generation

Traffic Secrets
A comprehensive course on traffic generation strategies for your websites. Consists of a workbook, written transcripts and a DVD set. Customers also gain access to the Traffic Secrets forum. This course is expensive but definitely worth the investment. I highly recommend it.