Difference with TA is that TA is not posted here very regularly but I see level 2 being posted here at times many times on the same day. For me, this is a messageboard where discussions can take place.

If you are a serious (day) trader, you should have a good broker that allows you insight into level 2. You shouldn't have to visit a messageboard for that. But OK, point taken that not everyone may feel the same way about this.