Bitcoin Advertising web sites:

https://coinad.com/

http://bitcoinbannerexchange.com/

http://exchange.4bc.co/

https://www.operationfabulous.com/

http://www.thebitcoinlist.com/listing/banner-ad-exchange-net/

http://bitcoinprbuzz.com/services/?list

http://puppytwist.com/

https://bitcoinadsmart.com/