Web site Analytics?

A quick observation. On the whole I try to use the two words "web site" as opposed to "website". The Web Site version is generally used with "classic" (albeit recent) books such as

• Peterson Eric T (2004) Web Analytics Demystified: A Marketer’s Guide to Understanding How Your Web Site Affects Your Business. Celilo Group Media
• Peterson Eric T (2005) Web Site Measurement Hacks. O Reilly ebook
• Sterne, J. (2002) ‘Web metrics, Proven Methods for Measuring Web Site Success’ – London - John Wiley and Sons Inc

Also what is perhaps worth paying attention to is the use of

• Web analytics
• Web measurement
• Website analytics
• Website measurement
• Web site analytics
• Web site measurement

Some authors say that measurement is different from analytics (the reasons vary) but I often use them interchangeably