Don't let them bother you. Anyone can make Monday Morning Quarterback comments.
Generally, I don't like when people watch when I play B/M games because I know I give away too many tells. The astute "spectator" should be able to pick up on these. Online, I don't mind if someone watches and I'm talking to that person... but just quietly watching? Ehh - it's a little weird. Although I would play higher limits, I'm still a student, and I'm stuck grinding out low limit BULLSHIT.
I doubled up at a $25 NLHE table on Party w/ QQ... anyone catch that? LOL.