Hi there -
I'm so sorry this happened. Can you please tell me (or link) the pages that this happened on? I assure you it shouldn't be happening.
Emily
I haven't noticed the ads actually blocking content, but the long ad on the left side of the screen does prevent reading anything when it is animated -- the flickering, rolling, flashing, etc. going on is too annoying and distracting to be endured. Especially on pages for eye disorders and autism! Advertisers, please make your ads stand still!