How to sync contacts among Yahoo, Blackberry and Ipod Touch?

[Mario Caruso]

I have a Curve BB, an Ipod Touch and use an Yahoo account in the internet. My main Address Book is in my BB and the e-mail account is in Yahoo. How can I manage, in an easier way, to have at least both of them (BB and Yahoo Contact lists) syncronized? Also, how can I add to this the Ipod Touch (it uses itunes...) contact list to be syncronyzed, too?

[Dubdub]

Don't think the BB can sync to Yahoo. It is not one of the supported email clients listed. You could try using Outlook. I know the BB will sync with calendar and contacts. Not sure about Yahoo though.