I've made a Google agenda for RTCW to publicize events.
See the main page of http://www.wolfmp.com/
If you have such an agenda, just add email@example.com agenda.
To incorporate the agenda in your website, use:
|<iframe src="https://www.google.com/calendar/embed?src=wolfmpcom%40gmail.com&ctz=Europe/Amsterdam" style="border: 0" width="800" height="600" frameborder="0" scrolling="no"></iframe>|
If you want to add events your self to this agenda, let me know what your google account is and I'll add you.
It's also possible to add recurring events. But for like once a week.