Does Healer's Blessing increase the casting time? I notice with other effects such as the Arcane Bloodline (for sorcerers) it specifically mentions that there is no casting time increase. For those too lazy to hit the SRD:
Healer's Blessing:
"Healer's Blessing (Su): At 6th level, all of your cure spells are treated as if they were empowered, increasing the amount of damage healed by half (+50%). This does not apply to damage dealt to undead with a cure spell. This does not stack with the Empower Spell metamagic feat."
SRD on Metamagic and Spontaneous Cure spells:
"Spontaneous Casting and Metamagic Feats: A cleric spontaneously casting a cure or inflict spell, or a druid spontaneously casting a summon nature's ally spell, can cast a metamagic version of it instead. Extra time is also required in this case. Casting a standard action metamagic spell spontaneously is a full-round action, and a spell with a longer casting time takes an extra full-round action to cast."
At a first glance, this reading would make Healing Domain absolutely worthless, as it would actually gimp in-combat healing. Since it's "automatic" empowered, the Cleric can't even turn this ability off.
