Thanks for your considered view.
From the advertising document
"Note: To support the service (and keep free features free), we sometimes run advertisements. We try hard to only run them in limited places. If you would like to completely eliminate ads from appearing on your blog, we offer the No-Ads Upgrade".
What constitutes "limited places"? Recently it has been almost every post I have created.
From the Features Page
To support the service we may occasionally show ads on your blog, however we do this very rarely. You can remove ads from your blog for a low yearly fee. We also have an option for high traffic blogs to show their own ads."
Just check my site....http://hackskeptic.com
Luckily for my readers nearly every one is either the 10,000th lucky visitor and needs to claim their prize, or has won an ipad.
I realise that WordPress is not an FI, but the previous contributor mentioned that changes in T&C's is a standard issue, similar to the wording of a bank statement or credit card issue.
Basically, if WordPress changed their ToS and added that anyone who posted an article would be invoiced $100 then in theory there is absolutely nothing the user can do but pay because by submitting their work they are agreeing to the new ToS.
For some reason I don't feel comfortable about posting anymore.