Thanks for typing booster! It is great! Particularly in the age of mobile it can even be more helpful.
There are some of the thought I get when keying with typing booster. It shows all the suggestion having 2 chars as well, currently. I think it should show only more than 3 chars words in suggestions. I might be wrong, but from my perspective I feel that showing less than 3 chars words as suggestion lessens its usability.