I have an aggression factor of ~3, and have am worried that i'm bluffing to much.

Anytime I "feel" that I have a 50% or better chance to win a pot on a scary flop i'll make a 3/4 pot - pot size bet. While great in theory, is this good poker practice?

For example:

I limp in with T9 with 5 other players...

the flop is QQQ, a very scary flop... it's checked to me... (2 players still to act after me)

$3.00 in the pot, I bet $2.50.

Long term, is this a Good play?

Bad play?

ps: I play at the .25/.50 tables