Phone, but even then it takes "5-7 business days" to "process"
Im glad I joined a while ago but seriously they need to get with the times and get their online system in place. For an org representing the online industry asking for faxes and snail mail is just unacceptable.
Dont get me wrong I support them (my money is where my mouth is) however it really is crazy how behind the times our "champion of the industry" really is.
