Replacing the Activity module with Rules?

Hi,

I need to create a social networking site with Drupal 6 (yay). As a social networking site, there is obviously a need for an "Activity log" of some sort. The Activity module had its last commit abut 4 months ago -- and judging from the issue queue, that's not because it's immaculate.

Then, I read this message:

http://drupal.org/node/249927

I am not sure what "Content log messages" are. However, I was thinking: would a module that exports just:

1) A database structure
2) Rules integration to "add" a record and that's it
3) Views integration

...simply do the trick?
Basically, other modules already call Rules events (or, well, they should). So, the "glue" to connect these events to this module would be quite minimal.

So, I am wondering: does something like this exist already? Surely, it ought to!

Bye,

Merc.