But healing meters are even worse. Given all of the crazy mechanics in the game (from armor and self-heals to situational abilities and AoE heals), they are very rarely (if ever) a valid interpretation of who's doing the healing and whether they're doing it right or wrong. And as guest blogger Ulkesshern says, more healing doesn't make a better healer anyway -- overhealing and spamming big heals do not mean you're a good healer, though they may get you higher on the healing meters.
There is one good word for healing meters, and that's to give the healer an ego boost after you show off the DPS meters at the end of the instance (usually they're on the bottom of DPS, and so when you switch over to healing, they're happy to be back on top again). But Ulkesshern makes a good point: for anything worth tabulating or tracking, healing meters are not to be trusted or followed.