Case in point:

$0.05/$0.1 No Limit Holdem
8 players
Converted at weaktight.com

Stacks:
UTG ($9.40)
Hero ($10.27)
MP1 ($10.09)
MP2 ($4.12)
CO ($14.91)
BTN ($2.02)
SB ($5.72)
BB ($4.90)

Pre-flop: ($0.15, 8 players) Hero is UTG 1
1 fold, Hero raises to $0.35, 2 folds, CO calls $0.35, 1 fold, SB calls $0.3, 1 fold

Flop: ($1.15, 3 players)
SB checks, Hero bets $1.15, CO calls $1.15, SB folds

Turn: ($3.45, 2 players)
Hero bets $3.45, CO calls $3.45

River: ($10.35, 2 players)
Hero goes all-in $5.32, CO calls $5.32

Final Pot: $20.99
Hero shows:
CO shows:

CO wins $19.95 ( won $9.68 )
SB lost -$0.35
Hero lost -$10.27

And I was worried about A3. LoL. Villain played it horrid pre, OK on the flop if he actually considered implied odds. I blew it on the turn and river, thinking I had fold equity plus a reasonable shot at the better hand.