If only it were that easy. I work at a school of 600+ students as the sole IT person and we went with Google Apps 2 years ago and it was probably the single best decision I ever made. The amount of work and stress not hosting an in-house e-mail server relieved was enormous. If you can have people dedicated just to the server stuff, ya, I see your point. But not every organization has the luxury of employing enough IT staff to adequately run all services in-house.

No, they still cannot access porn.com with a good web filter. Yes, the search may not necessarily be filtered for porn.com, but once they click on the website, the normal web filter will come back into play and the student will be blocked.

At first, WoW, much like most MMOs, was far from polished. I played since launch until last year (raid burnout), and there were definitely bugs galore. Servers crashing out. A lot. For days. Loot lag. The boat working/not working. Later on, nightly MC/ony/bwl runs while all the other guilds were causing massive raid lag. I could go on, but WoW's being polished on release was about on par with other releases.