>The only problem is that it needs to be kept refrigerated, and when it's really cold, it loses a little of it's flavour. It's best when only slightly chilled.

Yep... it needs to be at around +10 to +15C. Which means you need a little patience when you get it out of the fridge.

>I've never seen pure blueberry juice (except when I make a mess eating real blueberries). Besides the most important part of the blueberry is the skin.

If you ever get to be in any of the ex-Yu countries, just look for "sok od borovnice", or just "borovnica" on the menu or on the shelves. Try it.