Recent activity / news feed

[SJH]

I'd quite like to jump on the Facebook-style newsfeed bandwagon with a web application (CMS) I'm developing. I've noticed a lot of Web 2.0 applications have been including one of these and I guess I'd feel a bit left out if I didn't have something similar (not forgetting its usefulness on a site with multiple users, of course).

I'll be wanting to deal with multiple types of news, such as:

• page creation
• page update
• image upload
• blog configuration
• event creation, etc etc

What's got me stumped is how best to approach this. Is there anyone here who's done something similar who would like to share the general theory behind this? I'm not necessarily looking for code samples, just a few pointers about how to go about something like this.

Sam