I'm looking for a free permanent (not a 30 day trial) online diary so I can send links to those who want to book me for work. It needs to be reasonably secure, I want to grant access not leave it sat on a website open to all. It needs to be free or ridiculously cheap so it doesnt have to have bells and whistles. I just need to let all my clients and family have access to my free time for booking trade events and stalking outings. I'm not completely thick but I need it to be user friendly so no reams of code to write. A link from a blog or existing website would be acceptable.