A) Do your own DD
C) Buy or sell based on your own DD and convictions and not what others would have you believe.
D)Just because someone has been around for a long time does not mean they are trustworthy.(I could name names but that would just start a food fight) That said,make everyone EARN any trust you give them and assume they all have hidden agendas until they do EARN any trust from you.
Kelt