Simulate a search query as if you were in another region, country or city

Many advertisers target their campaigns to locations they don't live. So they often can't see their ads showing. But there's a solution.

For example you live in Quebec but you targeted your campaign to Toronto. So you can't see your ads as your IP address is likely to be localized in Quebec.
It exists parameters you can add at the end of the results URL in the address bar.

If you search for "buy car", the query URL will be:

http://www.google.ca/search?hl=en&q=buy+car&btnG=Google+Search&meta=

If you add the parameter: &gc=1002451 you'll have results as if you were making this search from Toronto. You can easily check it, as you'll see regionally targeted ads (region names below the ad texts).

Such parameters exist for cities, regions, countries, IP addresses, US zip code and latitude&longitude...

Here are the parameters :

&ip= (Simulates an IP address)
&gl= (Specifies a country code. i.e. CA, DE, JP, etc.)
&gr= (Specifies a region code. i.e. US-CA for California)
&gc= (Specifies a city code)
&gcs= (Specifies a city name, must use gr & valid city. i.e. Palo%20Alto)
&gll= (Specifies lat & long in microdegrees. i.e. 37304332,-121393872)
&gpc= (Specifies postal code in US)

Download here the code lists :

CITIES
REGIONS