I recently scheduled a meeting with someone who sent me to www.tungle.com It was cool. I got to pick what time worked for my schedule, and it then integrated it with my google calendar. Very cool.
I decided to sign up for a free account. Here I can go in and set the times when I'm available for meetings. If I want to schedule a meeting with someone, instead of sending email back and forth saying “that won't work for me,” they can go to my dedicated page at tungle.com When they choose a time, it automatically reminds them of the meeting, and puts it on my calendar. This calendar then syncs with my google calendar (and other calendar types are available).
Here again, I'm not sure how you turn “Free” into a business plan, but who cares. It works and makes my life easier.
There are all sorts of ways to share your schedule on your websites, facebook, twitter, etc. There is even an iphone app.
Check it out at www.tungle.com
Here is a video showing it off.