It will be helpful for users who always want to watch the price of bitcoin and its a time saver for those people who don't have to time to check multiple tabs on their pc or phones. But anyways it's just a suggestion which might other think not good but for somehow quite helpful for the users who always trade bitcoins.
So you want to say that some people are so busy while on the forum that they simply don't have time to open another tab and check the price? How much time will they save, few seconds maybe? This has been suggested before and its definitely feature not needed on the forum, and active traders have more efficient ways to track the prices than looking for it on the forum.