R66T, pronounced “Root 66” and intended as a play on the famous American highway Route 66, describes itself as “one of the nation’s leading publisher of targeted content, information and advertising to private Wi-Fi and High-Speed Internet Access (HSIA) networks, conducting tens of millions of individual user sessions—approaching one-billion user-minutes per month.” The company says that it supports Wi-Fi networks at places like airports, hotels, coffee shops, and malls, often providing free access in exchange for showing “hyperlocal” advertisements.

via How a banner ad for H&R Block appeared on apple.com—without Apple’s OK | Ars Technica.

This might be a good opportunity to mention that everyone should use AdBlock Plus, a plugin available for many web browsers, which will block these kind of advertisements.  Blocking ads is also a good PC security measure since ads provide a vector for a lot of malware to inject themselves.