My sister has cancer. I have a blog where I keep our family and friends updated on her treatments, when she's having scans, what the results are. It helps as it informs family who live out of town and out of country. It helps in that some of her friends will be sure to read the blog first rather than bothering her by calling. They can tell by my post if she is fine and up for a call or not. She has posted a couple times, but mostly it is me informing others of what all is going on. It has been quite helpful I think.