Given the fact that you can't synch a public folder contact list wirelessly...
each Public Folder in Exchange (and SharePoint, for that matter) has its own URL...that includes Public Folders that contain Contacts, e.g. http://exchangeserver/public/mygroup/groupcontacts
The Browser, assuming it can get to such a page, recognizes the contacts' phone numbers and E-mail addresses as phone numbers and E-mail addresses. So far so good.
My test started with enabling http authentication on the MDS Connection Service and testing with some older and newer models. It stopped working after the 7290. For some reason anything newer than that could not get authenticated.
Does anyone have their BlackBerry Browsers set to bring up such a page? If so, does it work with all models?