[adarsh_thampy]

If you want to track only link clicks, then use a URL shortener like bitly. They give you analytics for free.

If you want to track the actual users on your website, use any of the analytics products available- Google Analytics, Open Web Analytics, Piwik, etc.

Adding UTM parameters to your URLs is the ideal way to attribute website traffic. Just make sure you are consistent in your UTM values.

[executive]

Google Analytics is undercounting by 20-30% in our experience. No reason to waste time analyzing the wrong data.

[pcora]

all of these can be faked. if you really want accurate information, server logs are the best. the only thing facebook or users can't block.

if facebook says you got all the clicks, use the server logs to show otherwise.

-- edit. I'm not saying that I trust facebook though. I don't.

[rixed]

Of course users can fake server logs, since Referrer info is totally up to the client. Also, I'd argue it's harder to distinguish a bot from a real user from the server logs than from js.