Negative Conotation Associated w/ "Research Chemicals" - Legal and Illegal

[Dracula]

It seems many of us are familar with the term research chemical and what it is. However, it seems that "research chemical" has a somewhat negative conotation in regards to its use in psychedelic or drug forums. Many forums don't even allow the term to be used or the substances under that category to be discussed.

Although out of the many illegal research chemicals and analogs of illegals that there has to be some that can be considered legal. What would these be? Could there be terms to distinguish between illegal/analogs and ones that are almost completely legal within laymans understanding of the law. And what about those that just come out on the market (1-2 years ago) that haven't even been documented on all that much. How do they fit into the picture?

This somewhat broad topic has been stumping me for several months now...