Google is the most expensive with 64% market share, Yahoo! Has 22% market share and MSN has 9% market share. MSN best conversion rate. Low budget use just MSN if medium use MSN and Yahoo! if big budget add Google to the mix.
Set up goals. To find keywords search for what competitors use. Go to the following www.spyfu.com www.keywordspy.com www.hitwise.com www.compete.com Spyfu will also tell you what competitors are spending. To find words use www.wordtracker.com www.keywordsdiscovery.com www.goodkeywords.com Trillion is the best at keyword discovery.
