There are three things. Every time you view the page it increases the number of Views[1]. Unique Views seem to be related to whether something has changed between viewing it (I'm not sure what, but it goes up slower). Clicks seem to be unique IP addresses viewing it, so basicaly every person is only counted once.
(Everything watches IP addresses, or at least receives them, most servers log them (whether anyone ever reads the logs is a different matter). There's no harm in that.)
[1] This is simplistic. It seems to be on every connection to the page, but browsers tend to hold HTTP connections open whenever they can so it seems that you may have to close the browser in order for it to register as a separate view.
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Date: 2008-09-19 12:32 pm (UTC)(Everything watches IP addresses, or at least receives them, most servers log them (whether anyone ever reads the logs is a different matter). There's no harm in that.)
[1] This is simplistic. It seems to be on every connection to the page, but browsers tend to hold HTTP connections open whenever they can so it seems that you may have to close the browser in order for it to register as a separate view.