Dear JC,
Your idea sounds very promising and could indeed fit very well into
the general framework we are trying to build. At OpenIntents, we try
to provide open interfaces to let different Android applications work
together well.
A global log ability could be extended to log all kind of activities
of a user that one requires. If you wish, it could log not only how
often you checked for messages, but using location based services one
could log how long one is at work, how often you visit your grandma,
or how many miles you walk per week (speed < a couple miles per hour).
If you are interested in our project, have a look at our developer
page and discussion group:
http://code.google.com/p/openintents/
http://groups.google.com/group/openintents
Hope to see you soon at the project,
Peli