Bobby Jones was an amateur golfer, just sayin...I am an amateur brewer but not an immature brewer! When I get paid to mix grains and produce wort, then I will be entitled to be called a pro brewer; until then amateur brewer, hobbyist brewer, homebrewer or just entrant suits me fine and no offense taken, as none was intended.
And S Cerevisiae - dude you got an awesome thing going - my daughter is in a graduate program in microbiology and I am going to show her your pics! When I visited her, I streaked some agar plates and was pretty captivated by the whole process from autoclave to cultured plate.