Microsoft Corp. signed a deal with Global Hyatt Corp. to put hotel ads on Verizon Wireless phones, part of a bid to turn around its shrinking advertising business by expanding beyond personal computers.

The Hyatt ads will encourage people to sign up for a frequent-guest program, as well as letting them book rooms and check in using their phones, said Charles Johnson, Microsoft’s general manager for mobile media. The companies plan to announce the deal today at an ad-industry conference in Cannes, France.

report doesn't really reveal too much info, let's wait and see what that ad-instustry even will bring forward. there's definitely opportunities out there for mobile ads but limiting your adspend on one network would be like displaying banner ads for one isp only... i guess this will probably grow with bluetooth capabilities as u can target phones in a more selected way, e.g. at airports