Although I've been playing WoW since early vanilla, I've come to rely on Carbonite as I have MS which affects my memory - The little coloured areas are just the thing I need to get me through quests I've done a load of times
I'm a ex-subscriber, and will donate again as soon as my balance allows - this add-on is essential, thank you very much indeed.
On the test front, no problems at all - I only use the minimap and quest portions, but since Altoholic seems to break my quest handing in, I may have to learn to use your warehouse feature too.