No, no it hasn't unfortunately. I've gotten much better at tactics trainer, but it seems I can never get progress from one form of chess to transfer to another.
I can't complain though, especially with how well I've been doing in correspondence lately.
EDIT: To clarify I mean that correspondence, blitz and tactics trainer all progress totally separate from each other, at least for me.
Over the last one year plus it has helped me see patterns or at least given me ideas. Now if I could calculate on live games better