Totally agree with this.You make most money playing the opposite type. Therefore when most people play tight and aggressive, the people who loosen up to exploit this tightness are going to make most money. If everyone played loose passive, TAGs would make the most money, hence the reason playing TAG is sought after in micro's poker (most profitable against fish).
Agree with this partially, because seriously, for the main reason playing TAG is so profitable at micros refer to what jbbb said.TAG is also esay to play good than LAG, thats the true reason most micro regs playing TAG.