Good question! I'm too new to give much advice (beyond "read a lot and be prepared to spend lots of money") but I think once or twice I've had someone correct me on a small factual thing. Yay for people who know more than I do.
What gets me is if someone "corrects" you but that wasn't what you meant in the first place and then you're thinking, okay, do I post again and clarify for pride's sake or just let it go?
tank with 29-gallon sump
2x Maxijet powerheads
Mag drive 9 return
Coralife 4x65 Lunar Aqualight
120 lbs rock from liverocks.com
1 peppermint shrimp and 1 fire shrimp (very shy)
2 black Ocellaris, Squish and Smudge
3 chromis, too identical to name as yet, in QT
29-gallon with two goldies, Carrot and Orangehead