Party Poker 0.50/1 Hold'em (6 max, 6 handed)
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Both villians are pretty LAG.

Preflop: Hero is BB with [Th], [Kh]. MP posts a blind of $0.50. CO posts a blind of $0.50.
1 fold, Hero checks.

Flop: (4.50 SB) [Ks], [3c], [Ts] (4 players)
Hero bets, MP calls, CO calls, Button folds.

Turn: (3.75 BB) [8s] (3 players)
Hero bets, CO calls, Hero calls.

River: (9.75 BB) [Jh] (3 players)
Hero checks, MP bets, CO folds, Hero calls.

Final Pot: 11.25 BB

Should I be folding the turn here, or is the calldown okay?

I actually think you played the hand well. It is difficult to put your opponent on a flush here because so many make weird plays. I mean for all we know, he could have K8 or T8.

RAISE PF!

lotta dead $$$

hand will play out differently
or at least make calling the turn raise more appropriate

I don't mind the check preflop. What is the point of raise a marginal hand that will not eliminate anyone when you are out of position?

Yeah, I wasn't paying attention and didn't realize there had been two early posters.

I don't think raising preflop does any good here.

Looks fine.

this hand is FAR BETTER than marginal against 2 posting limpers and a button limp. We raise because are chances of winning are usually much greater than 25% here...much.
As a bonus, we have dead money from the SmallBlind

The good its doing is getting more $$$$ in the pot when we have an equity edge, usually.

I don't think it's close.
And will be glad to learn.

who cares about thinning the field?
We have a great multiway-big pot hand.

Against two random hands (posters) and a button limp, KTs will win far more than 25% of the time. Raising = value.

Also, we don't care if everyone calls because our hand plays well multiway.