Any value in betting on the river? Is check/calling OK?

I didn't have GT+ on this table at the time...

Party Poker 1/2 Hold'em (8 handed) FTR converter on zerodivide.cx

Preflop: Hero is BB with [8h], [Qd].
3 folds, MP2 calls, CO calls, 1 fold, SB completes, Hero checks.

Flop: (4 SB) [3d], [Qs], [9c] (4 players)
SB checks, Hero bets, MP2 folds, CO calls, SB calls.

Turn: (3.50 BB) [9d] (3 players)
SB checks, Hero bets, CO calls, SB folds.

River: (5.50 BB) [6d] (2 players)
Hero checks, CO bets, Hero calls.

Final Pot: 7.50 BB

I bet the river.

b/f yep