I'm never sure if to raise these hands. Especially when the player is betting into me like this.

Party Poker No-Limit Hold'em, $10NL (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($9.85)
SB ($9.17)
BB ($8.65)
UTG ($11.41)
UTG+1 ($10.89)
MP1 ($9.75)
MP2 ($8.25)
MP3 ($3.72)
CO ($0.26)

Preflop: Hero is Button with K, K. SB posts a blind of $0.05.
6 folds, Hero raises to $0.3, SB (poster) calls $0.25, BB calls $0.20.

Flop: ($0.90) 8, K, K (3 players)
SB checks, BB bets $0.45, Hero calls $0.45, SB folds.

Turn: ($1.80) 5 (2 players)
BB bets $1, Hero calls $1.

River: ($3.80) A (2 players)
BB bets $3,
Hero raises $8.10 and is All-In BB folds.

Final Pot: $6.80