The cyclopedia states that "Any Ability or Talent that does not use a weapon as part of the attack gains a small Accuracy bonus based on the level of the character" This seems to also apply to abilities and talets that DO use the weapon as part of the attack, but just for the "additional effect" part. For example when my lv 12 rogue uses Blinding Strike (a Full Attack ability) with 84 accuracy, he wil apply the damage using 84 accuracy (vs def.) and the blindness effect of the attack using 96 accuracy (vs ref.).
This seems like a bug, or is it?