I pretty much just have one set to party chat & Buffs/Debuffs and one set to Loot/system messages to look back on after a fight but other then that it just get's to jumbled. As far as i'm concerned the Log still needs work before it's really useful, ~"So and so" suffers/recovers from.. ~ really needs to be separated in text/color. that and they really should allow for changing of background color in the chat log like they had in XI, it gets to be a huge pain/strain trying to follow the log in a lot of lighting conditions. course that's just my thought on it