Is Second Life a business for you?
Is a business interested in customers and visitors?
To improve the service, don’t you need a way to understand visitors?
If so, you need SIM statistics. With statistics, you’re able to see where people go, how long they stay, what they buy, what they see, what they touch… and can improve your land accordingly.
On SLEXCHANGE.COM there are several “simple” statistic tools, but if you want to invest some time, I suggest you to try Maya Realities.
It’s a good service, it’s detailed, and… its costs are not high.
I’m not affiliated with them, and I’m suggesting them because I think it’s a good service.
If you want a different service, try Google (this is one of many: SIM Monitor).
This one, instead, is to monitor your own statistics.