Carb ratings

I have just looked at the low carb warehouse site - Ok most of it is out of stock but I am aware that they are quoting net carbs a lot of the time on their food items. I know that net carbs means less the fibre but we count it do we not? and if so what effect does the fibre part have on our blood sugars?

So if I am reading all of this right. Net carbs are stated and the rest is not counted even though some people say they do affect them and should be counted in. I would not normally get involved with net carbs but the site I was on which I might add is in Northamptonshire mostly doesn't state them, and I am not sure that works very well from what I have read. There doesn't seem to be a concensus so its try and see then. But its a bit iffy not to put the right amount to make the food item look good to us. :?
There was a sugar free maple syrup that looked really good as well :cry: