should i slow down on scary rivers?

[Noodles]

Party Poker 0.50/1 (10 handed)
I have T /images/graemlins/spade.gif, Q /images/graemlins/spade.gif and am MP2

UTG folds, EP1 folds, EP2 folds, MP1 folds, I call, MP3 calls, CO folds, Button folds, SB calls, BB checks

Flop(4 SB): J /images/graemlins/club.gif, 4 /images/graemlins/club.gif, T /images/graemlins/diamond.gif

SB checks, BB checks, I bet, MP3 raises, SB calls, BB folds, I call

Turn(5 BB): Q /images/graemlins/club.gif

SB checks, I bet , MP3 calls, SB calls.
Good i think no straights or flushes out)

River(8 BB): A /images/graemlins/diamond.gif
(Bad i think but I just cant manage to click the check button and bet)

SB checks, I bet, MP3 calls, SB calls

Ok any K would have got me on the river,but i just couldn't check,should i have checked?

Results later.

[Bob T.]

This river is worse for another reason, not only does any King beat you, but AK, AQ, AJ, and AT also beat you. In fact the only hands that you can beat are JT, J9, and Q9, maybe A9 if your opponent somehow got this far.

Usually you should bet if a scare card comes on the river, but in this case, I think you could check.