[hayksaakian]

This is the tool recommended to my by a person on the adwords team:

https://www.google.com/webmasters/tools/mobile-friendly/

According to them, starting april 21st it will be a ranking factor.

[WalterGR]

    april 21st

Great. April 2011 was when Google launched Panda 1.0, from which I don't think my slang dictionary site has ever recovered.

Thanks for the link. I guess I better hop to it.