I recently upgraded my main server and installed Fedora Core 2. The logwatch on fedora emails root everyday with a summary of the activity on the server.
I liked this so much that I hacked together a cli php script that collects stats for a Geeklog site and emails it to the admin everyday.
What it does:
The script checks for the stats, ban and spamx plugins before collecting that information, so if you do not have them installed no problem. I have not tested this on anything other than my system so use at your own risk.
To install it simply copy the script to someplace on your server. Edit the path to your lib-common.php and perhaps the path to your php executable. And add it to your crontab. On my server the script is located at /var/www/emailstats and I wanted it to email me the info everynight at 12:30 so my crontab entry is
30 0 * * * /var/www/emailstats
Anyway here is where you can download the script.
Note: you can have multiple copies of the script for multiple sites.
Enjoy