Think about the magazine section in your local supermarket. If you reach out with your eyes closed and grab the first magazine you touch, you are about as likely to get a calendaring tabloid as you are a respected calendaring journal.
Now imagine that your supermarket is so accommodating that they allow anyone who has an opinion on calendaring, well informed or otherwise, to just stack their calendaring articles, magazines or books in the store. Now if you reach out at random you are highly likely to get junk information on calendaring and lots of it.
Medical Presentations Resources calendaring to cyberscheduler