Buyselltrend Indicator

I was looking for an indicator over the internet. After searching a lot I have found an indicator buyselltrend.com
Can any one tell  me is it a good one?

I do not have any experience with this specific indicator, but I have used similar indicators. If you look at the first image on their website, there are many candles that penetrated the blue line to the downside. The indicator most likely would have been red during these times and not blue. It may have even plotted red arrows too. However, when you look at it in the past, it looks too good to be true and you do not see the red lines or red arrows that may have been there before. Indicators like this usually repaint and that's why they look so good. Again, I do not know about this indicator specifically, but I have used other indicators very similar to this and that was the case.

Hi, How many candles before the pair (eur/usd) m15 does the indicator predict ? 1 to 3, 1 to 5, 1-to 10 ?