I think there should be a LOT more going on with the "Grammar Bank". To be honest, searching for "grammar" tips from the lessons is not very intuitive or conducive to learning. I'm having to use a multitude of websites to try to figure out the grammar on my own. Not a big deal if I didn't already pay you for two years' worth of material (yeah, I'm not bitter at all about that...

I really love learning grammar -- I'm strange like that. And I really love learning Vietnamese. I wish this could be that all-in-one site that teaches me from beginning to advanced. I've had that kind of luck when I was learning Spanish -- though yes, I know that it is much more widespread. But the site that I used had created many, many different grammar topics with quizzes for each one. It was extremely helpful in teaching me! It was FREE, as well, so I was hoping for a LOT more when I paid for this...
I hope you will consider this...