There's seems to be a lot of input from more active members here. I haven't seen any of your posts, but based on what you are keeping and the advise other have said you were giving, i might have been inclined to ignore you. I am a keeper and breeder of large cichlids with my smallest tank at 10g (fry tank) and my largest at 120g (oscar tank, which is still to small, but I am searching for an upgrade). My best advice to you would be to research before answering questions. If anything you say comes off as questionable you would more than likely not get a response. If someone were to tell me that 3g was acceptable for dwarf cichlids I would laugh at them and tell them to sell their fish and abandon the hobby. Now trying to be rude, but what can I say? Most of my fish keeping skills were learned from the knowledgable people on this forum. I went from a newb with an uncycled tank, killing fish left and right to an experienced keeper with successful breeding pairs. I wouldn't really say that this forum isn't beneficial.
My advice to you would be to spend more time reading the advice given by the experience fish keepers than worrying that no-one is taking your bad advice.