Do a Web search for "exif viewer" - there are some good free Firefox add-ons, and some that (claim to) work with Internet Explorer.

This is what I've got on the browser I'm using right now:
https://addons.mozilla.org/en-US/firefox/addon/3905/

If you're just curious about what kind of info is available and don't want to install anything (though it's quick to do so and easy to undo), here's a totally online version (you have to paste in the URL of the image):
http://regex.info/exif.cgi

You can also geet a good sense of what EXIF is by scrolling to the example on the Wikipedia page
http://en.wikipedia.org/wiki/Exchangeab ... at#Example

Yes, what he is referring to is EXIF data, which is attached to all digital photos. You can get an exif reader for your browser very easily. Personally, I use https://addons.mozilla.org/en-US/firefox/addon/3905/. It adds a couple options to right clicks on photos, then pulls up detailed EXIF in a separate window. Keep in mind that it is also very easy to strip a photo of EXIF, and often times people do this when they use the Save For Web option of Photoshop, which converts the color profile to sRGB and saves the file at a determined quality in jpeg format in one easy step. You can disable this, as well. Just figured I'd explain why some won't have it.

ETA: Haha; didn't see nartreb's post on the next page. Oh well.