Another thing about these so-called “Web 2.0” applications: nearly all
of them rely heavily on email (aka Web -1) to notify you about events.
If you’re not proactive and turn off email notifications in Facebook,
for example, you’ll get inundated in messages that have to be handled
somehow. Reading messages won’t make the corresponding flag in
Facebook go away.
Similar issues exist for Jaiku and Twitter.
Perhaps a simple listserv-like functionality would be in order, in
that if you simply hit reply and send you can acknowledge a
notification, and it will disappear from the service in question.
Other one-word commands like ‘OK’, ‘ACCEPT’, ‘IGNORE’ could be used to
handle requests. This would have the added benefit of enabling an
auto-ignore of stupid Facebook app invitations via email rules, truly
a mashup worth implementing!
As it stands, sadly, the traffic is one-way, placing the onus on the
user to clear their email and their flags. The tending of the social
garden just gets even more burdensome.
Update 2007-10-12: posting this late last night I forgot the real reasons these emails exist: spam. They serve to remind casual users about the site and also serve as a potential vector for future advertisments.