StormPost's Damian Borichevsky suggested that Facebook becoming an ISP faces challenges. The email address program is balky with: no subject lines for messages; messages getting stacked with the
newest ones at the bottom; and a filtering mechanism that puts messages in filters if not sent from a friend.
Borichevsky said the system's current incarnation will make it tough to use it as
a main ISP.
But, Facebook has shown it is constantly evolving and tweaking and improvement could come and likely will.
"They are a long way off in some areas," Borichevsky said. "Just
the momentum they have with the sheer number of users puts them in a great position."