Marketwatch.com is a very popular website with an Alexa.com rating of 480:

http://www.alexa.com/data/details/main/marketwatch.com

A rating of 1 indicates the most popular site, and infowars has a rating of 6,000 or so. Marketwatch allows comments after a free but simple registration.
Please make comments on this 911 story:

http://community.marketwatch.com/groups/us-politics/topics/top-40-reasons-doubt-official

Every time a comment is entered into a group's topic, that story is brought to the top of a 'Most active' topic list, and the story will not get buried amongst the hundreds of other stories.

Thanks!