What are they?
Relevancy Search Engines
Search databases that use formulas to determine which website to list and in what order when a keyword search is performed.
The big 4 are: Google, Yahoo, MSN and Ask.
Main advantages are free exposure and targeted advertising, however website developer does not have much control. Developing good rankings depends on on-site, off-site factors as well as avoiding gimmicks.
How long does it take to show up on the first page of keyword targeting?
3-6 months or longer
Why do we have an excellent ranking with one and poor with others?
This is because search engines use different formulas.
What is the quickest way to get good ranking?
Build link popularity; put informative content on your website and use keyword density optimisation.