How will regular users know which web apps work offline?

I've been reading up on and experimenting with the appcache, but one thing
I don't understand is how a regular user would know that a particular web
app would work even if they didn't have an internet connection? If I had my
laptop with me and no internet connection, I wouldn't even think to try
browsing to any websites.

I wonder if it would make sense for the manifest to store metadata about
the installed application - like it's name, an icon, and a description, so
that browsers could provide an area where users could browse their offline
applications for when they didn't have an internet connection? I think this
would have benefit to users and lead to more people being aware of offline
usage.

I didn't see anything on this in the posted notes, and if browsers wanted
to let users know which websites/webapps were available offline, it'd be
nice if content owners could hint at some display information in the
manifest. Anyway, thank you for your time.

best,

- Pat