Considering cleric for mangler need feedback.

They should debuff in raids...

one thing that causes problems is don't rez people outside of group while grouping for cash - you are using your mana and causing down time for your group - just don't do it
Same thing for throwing people buffs - your soul purpose if grouped is your group and having mana at their disposal
don't take it to hard that it is your responsibility to find a replacement if you have given at least 30 mins warning - the clerics that leave the group with a 5 minute warning are the ones the don't get groups latter
when waiting on a group - you can always duo with someone i have never been denied this, but make sure you tell them you are waiting on a group - and before you leave always top off buffs.
When you are grouped always buff up the group - don't just focus heals - buffs help you in the long run anyways
any undead are is great to root nuke if you ever have to solo - but if your a good cleric you should be on many friends list and get tells soon as you log in - if you don't maybe you shouldn't be a cleric and think about switching class
get your epic asap - your value as a group / raid member just went up - also if your bored and want to cash in just travel around and offer rezz - train central places like COM, unrest, GUK and SEB - you can make a lot of money floating the picks rezzing for donation - btw i keep a list of non donaters and just put them on ignore

This is all bad cleric advice. Its evil.