This has yet to affect me to the point of me actually noticing that anything was broken. The worst I'll see is a lot of extraneous whitespace on a webpage where an ad would have been.
That said, frankly, if a web site won't work properly because it can't load content from an ad network, then it's probably not a site I'd want to visit and pull information from.
That said, frankly, if a web site won't work properly because it can't load content from an ad network, then it's probably not a site I'd want to visit and pull information from.