Its always interesting to know about the internet web servers. Explore an exclusive usage statistics of web servers around the globe, among the million servers at webserver usage statistics. You can get info on whois and other website related information also.

http://greatstatistics.com/

I use google analytics and statpress reloaded for wordpress.
There are a lot of sites/services out there you can use, the important thing is that you do keep track of your stats, very important for selling ads, selling sites, or improving your results.

I would rather use NetCraft They don't have the stupid "Social Media share" thing getting in the way!!!!!