http://mashable.com/2010/04/02/twitter-the-killer-box-office-predictor-2/
There's been discussion in the forums about the relationship between tweets and box office performance. Looks like a little research has been done for movies between Nov 2009 and Feb 2010 and compared to HSX.
Here's a direct link to the research paper done by HP Labs that was cited in the article. There's a link to the pdf article on the right side of the page.
http://arxiv.org/abs/1003.5699
It wasn't clear to me which HSX numbers they were comparing to. Was it halt price BO estimate or the ERC weekend estimates? Their graph (FIG.6) of Actual revenue vs. Predicted Box-office has some data points that I'm not sure about. I think the far right at 140M predicted is TWLI2 (ERC weekend estimate?) and the data point around 80M predicted is AVATR (halt price?) but not sure what the data point around 55M predicted is. Maybe I'm misinterpreting what the graph was intended to represent or I have the wrong numbers in my spreadsheet.