Originally Posted by
Therigar
1. The Heal skill is not useless and it does perform as indicated in the description. Its usefulness is not usually noticable at low levels because shrine rests at low levels over-heal most characters. It is also not normally noticed at low levels on clerics in particular if they are not taking heavy amounts of damage. As mentioned by others, the skill is most noticed by other characters at high levels when resting while high heal skilled players are nearby.
2. The two feats that I use to improve curative spells are Empower Healing and Maximize. As mentioned, maximize does not work with the spell Heal or Mass Heal. It is useful, however, in increasing the cures for mass cure spells. Some players prefer empower over empower healing. The advantage of empower is that it also affects non-curative spells. The advantage of empower healing is that it affects heal and mass heal.
Regarding the heal skill, I would take it if you have the skill points and don't have other needs. Since I don't know your build I can't tell if you should be using the skill points in other places. However, IMO most clerics should be spending skill points on heal as there are few other needs. The argument that clerics should spend skill points on concentration is, IMO, rendered invalid by the quicken spell. My experience is that concentration isn't usually high enough to avoid interruption at higher levels so that quicken is the better choice. That means even if only getting 1 skill point per level there is nothing more useful than heal available. At least that's how I see it.