Update:Apple CEO Steve Jobs responds directly in a letter on the Apple website.

There has been widespread speculation regarding the health of Apple CEO Steve Jobs as the company has abruptly announced the final MacWorld. A few days ago, gadget blog Gizmodo first speculated the reason for Jobs not to deliver his traditional keynote was because of serious health problems. The announcement made people sell shares, which drove the Apple stock price down. Media publications later called Gizmodo’s story washy at best and not credible. Apple has now announced that Steve Jobs has a “hormone imbalance”, but he will remain company CEO.

I really believe Gizmodo, and all other blogs for that matter, should scrutinize all sources before making bold claims which can be purposely done to mislead investors and the market hence profiting from market prices changes.