A few of the guys I day traded with would watch it, just as one indicator among many. A lot depends upon the time frame of your trading.
I used to work at a place that ran a 2-week school for day traders. Most of what we taught involved the things to not do, like the common newbie mistakes.
One good thing to remember about indicators is that almost all of them use past prices as part of the calculation. New guys tend to think that they are all magic ways to see the future. But if price is part of it, then you're looking at the past, not the future. An experienced trader who just reads price action can know everything that 101 indicators can tell you, because they are based upon the same price movement.