 A betting tell
Just something that i've picked up that i thought i'd share.
If you raise preflop and get a caller, then out of position the caller bets out (known as a donk bet), you can often be sure they have not hit the board strongly (they will just have a little piece). Often people bet out with second pair/pocket pair to stop you from betting and to find out where they are (continuation bets are standard so their testing you before you bet).
Aslong as the player can lay down a hand, an EV+ move (from my experience) is to shove in a nice big raise with air, or just to call with top pair/strong hands.
Now obviously against very strong players this could be a purposeful bet with a very strong hand, but against your average small stakes player this is usually a bet with second/bottom pair.
I have countlesss HH's of this but heres one that happened literally seconds ago which inspired me to do this thread:
Full Tilt Poker Game #6580346118: Table Marcon (6 max) - $0.10/$0.25 - No Limit Hold'em - 23:58:24 ET - 2008/05/26
Seat 1: jjok ($19.20)
Seat 2: JayC170 ($32.20)
Seat 3: PhattFreddie ($26.65)
Seat 4: CarterDanks ($26.40)
Seat 5: Joeel4444 ($24.10), is sitting out
Seat 6: PostflopDonk ($17.80)
PhattFreddie posts the small blind of $0.10
CarterDanks posts the big blind of $0.25
The button is in seat #2
*** HOLE CARDS ***
Dealt to JayC170 [Td Ks]
PostflopDonk folds
jjok folds
JayC170 raises to $0.85
PhattFreddie folds
CarterDanks calls $0.60
*** FLOP *** [7c Ah 2s]
CarterDanks has 15 seconds left to act
CarterDanks bets $1.50
JayC170 has 15 seconds left to act
JayC170 raises to $4
CarterDanks has 15 seconds left to act
CarterDanks folds
Uncalled bet of $2.50 returned to JayC170
JayC170 mucks
JayC170 wins the pot ($4.60)
*** SUMMARY ***
Total pot $4.80 | Rake $0.20
Board: [7c Ah 2s]
Seat 1: jjok didn't bet (folded)
Seat 2: JayC170 (button) collected ($4.60), mucked
Seat 3: PhattFreddie (small blind) folded before the Flop
Seat 4: CarterDanks (big blind) folded on the Flop
Seat 5: Joeel4444 is sitting out
Seat 6: PostflopDonk didn't bet (folded) | 
