This is the Least Square Moving Average channelled made by Mladen for MT4 and is an excellent tool for trading trends and timing swing trading entries.
As explained by Mladen:
Well, first version of LSMA trend was posted long time ago and it was made only to show what some other indicator was about. In the mean time it was renamed (surprise, surprise ...
The main problem (in my opinion) with the old version was the "oversensitivity" since all it is looking for is a slope of linear regression value (LSMA == linear regression value). This version is a possible way to avoid that "oversensitivity" and ads a kind of a filter on it that might help in avoiding "insignificant" changes.