Google searches the text of documents for keywords. By default it
searches with a "and" between each word. You can search whole phrases by
putting quotes around them. It tends to return the best general keyword results.
Yahoo is really a web catalog. It searches through it's list of web
sites. Each site has been catagorized be a human at some point.
Alta Vista searches the text of documents for keywords. By default it
searches with a "or" between each word. You can force it to include a word by
putting a "+" sign in front of that word. You can force it to exclude a word by
putting a "-" sign in front of that word. You can search whole phrases by
putting quotes around them.
Mamma is a meta search engine. It submits your search to a number of
different search engines and then compiles the results. By default it searches with
a "or" between each word. You can force it to include a word by putting a
"+" sign in front of that word. You can force it to exclude a word by putting a
"-" sign in front of that word