The correlation lies in the demand of bitcoins from markets. Imagine: half of the fast food chains in all of the United States (which is a ridiculous amount) states that they accept bitcoin. Suddenly, that gives bitcoin more publicity and demand (from the chains) and would interest more people to join in the fun. Eventually, you have the general public being knowledgeable about bitcoin (even a little bit) as a payment option and perhaps some will delve deeper. This creates more trading opportunities... Plus, it could remove the negative media portrayal of how bitcoin is shifted at least a little bit.