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A Firefox extension shows where a website is located.
Lazarus: Form Recovery restores text and entire Web-form entries after accidental deletion; Clippings and Textarea Cache let you save what you type into text boxes for easy reuse. Plus, add-ons that clear form fields and show a site's nationality.
About IP addresses and physical locations.
About some recent defensive computing suggestions
When it comes to email the message is always "buyer beware".
Is an IP address personal? Does it point to you? Yes and No.