"Dont slowplay a straight" but I do it anyway

[Eeegah]

Another hand without reads, sorry. This was from my second session ever at Stars .50/1, but the table did seem rather soft, if a little tricky at times.

PokerStars 0.50/1.00 Hold'em (10 handed) converter

Preflop: Hero is MP2 with K[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/spade.gif[/img].
UTG calls, UTG+1 calls, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises</font>, MP3 calls, CO calls, <font color="#666666">3 folds</font>, UTG calls, UTG+1 calls.

Flop: (11.50 SB) J[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
<font color="#CC3333">UTG bets</font>, UTG+1 calls, Hero calls...

Over and over again we're told to not slowplay the straight, don't slowplay the straight. And yet, here I am slowplaying the straight, even in a big pot.

Still, a raise on this flop seems like it would announce to the whole world what I have and kill the action; additionally the rainbow board makes a free card pretty safe, outside of an A or K falling and making us chop.

I see an argument for just calling here, and really little more than dogma telling me to raise. Someone wanna slap some sense into me?