If you use Adsense to recoup the cost of hosting your blog beware!!! I came in this morning and Google had kindly sent me an email stating that my Adsense Account has been disabled due to invalid click activity.
Here is the thing. I manage my blog from the same network that my students are on and I direct my students to my blog. If a student clicks an add it comes from the same IP address as myself since my company does Port Address Translation.
So, Google decides that its invalid click activity and disables the account, taking all your earnings with them.
Nice one Google. I dont want to make money off my blog anyhow, its there for my students to find information, and for colleagues to track my study progress. Anyhow, I'm pretty mad at google right now!
Just want you all to be aware of what they can do.