Delayed news = Less speculation

The faster the unofficial financial news you get, more is the speculation built into it. However, this is not necessarily always true.

For example, here are different forms of financial news sources in the order of speculation, from highest to lowest
(0) Word of mouth
(1) Wall street floor
(2) Online discussion boards (Like Y! finance)
(3) Stupid Stock alert services
(4) Mainstream news
(5) Analysts announcement of financial status of company

Playing on speculation is not necessarily bad.. As efficient market theory says "Once the news is out, the news is already factored into the stock price."