As far as I knew you couldnt tag people in posts you made from you're fan/business page. However I see a page which I've liked and they can tag people in their posts. The tag is at the end of the post "- with <names>". How is this? Can you now tag people? I tried from my page and I dont seem to have the option. I can provide a screenshot of the post with people tagged if people need to see it!