Howdy Bob, and Welcome to the Chordie Forums!
Which Tablet are you using, and OS? I personally haven't experienced what you are describing (on 2 variants of Windows and Linux) with Chrome, Firefox, or Safari browsers, so a bit more information might be helpful.
Thanks for stopping by and calling this to our attention,
Take Care;
Doug
PS: I however run Ad Block Plus and Ghostery on all my browsers regardless of hardware, so it is possible that the banner you mentioned is just being filtered out and not displayed.... might be worth a try unless someone else drops by with another suggestion.
"what is this quintessence of dust?" - Shakespeare