It's a nice idea, except that you're placing an enormous amount of trust in the web site owners not to leak/sell your private commentary to all and sundry. The

It's a nice idea, except that you're placing an enormous amount of trust in the web site owners not to leak/sell your private commentary to all and sundry. The potential for blackmail with something like this could be huge. Also, if you're living under a not so friendly regime web sites like these can be obligated by diktat to hand over your information upon request. Imagine, if you will, a modern version of Anne Frank.