> Even though I know where this one address should be and that the
> current map is wrong, I do not have the lat/long
> and I need to make sure that the hundreds of addresses I have are all
> mapped correctly.

You might want to reconsider the approach.  If you geocode hundreds
(or tens) of addresses every time someone views your page, it is slow
and error-prone.  It may give the wrong answer forever, or the right
one this one week and a different one next week.  That's life with
geocoders, they are after all only making more-or-less educated
guesses, based on what data they've been fed, which could be changing
often.

You could geocode once-only and store the lat-long in your database,
using that stored lat-long to plot your map.  If there's a mistake,
you can correct it, it's all under your control.

You do need to check the terms of use to see if that use of geocoded
data is allowed, but there are many geocoders out there, with
different terms, and different 'accuracies' in different regions.  If
you don't like one, use another.  You could even poll several and take
a vote on where an address lies.
http://groups.google.com/group/Google-Maps-API/web/resources-non-google-geocoders
.
cheers, Ross K

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