My site will be a global site.
Does adsense display ads relevant to the location they are being viewed from?
If my page is likely to be viewed in, say Brazil, how does adsense know to display Brazilian ads?
Is it IP adress based, or must I have Brazil in the text of the page?
I will be music instrument and band based content. Will adsense display any music store ads in that area?
Must I have the text 'Brazil' in the HTML? or are there tags to signal to adsense my keywords?