I've noticed that a lot of the dailies are marked as normal quests. Some of them turn blue after you have done them before but others like the Shattrath cooking and fishing dailies are marked as yellow regular quests and once you have done all of them there is no longer a mark for them. Those aren't the only ones that do this or are marked wrong they're just the only ones I remember off the top of my head. There's also a lot of quests that don't show up in the data base or won't show up until you get into the right zone.
It would also be nice to see Carbonite and the addon Pet Tracker work together to make pet tracker actually work with the Carbonite map or integrate a pet node import similar to the mining and herb nodes.