in this case what i would do is store the keywords, when they are on
the site they can click thier saved searches and it will basically do
an auto search with the saved keywords. For the email way i think
they probably save the keywords as well but are using a cron job to
fetch the results and form the email.
Let me take a look at one of these sites to see what exactly you want
and can give a better explanation.
Joseph Crawford Jr.
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