As may be somewhat obvious, I haven't exactly extensively tested all the skills in the game for value. Most of my observations on skills are, despite my best efforts, through the filter of a battlemage (and playing on Casual for the most part, because anything higher is just more stress when writing a guide).

So, basically, anyone who's up for this, look through the skill section of my DKS guide, and point out:
-Skills I've said suck, but are actually good. Name specific builds where necessary. (Fireball is a HUGE example of this, though that's more a consequence of the magic damage formula changes in DKS)
-Skills I've not properly described the effects of.
-Any other suggestions that may come to mind.
-This all goes triple for status magic and summon stuff. I've never touched Blind, Charm, Curse, Fear, Summon Ghost/Undead/Demon, Summon Mastery, Life Tap, or even Firewall, Magic Blast (which apparently sucks terribly now), Polymorph, Ranger skills except Explosive Arrows, Potion Efficiency, and Evade, or weapon Expertise skills except Dual-Wield.

And of course, point out any errors in my skill tables, whether spelling, grammatical, or in the actual data.