flop c/r limit vs no limit

[lastcardcharlie]

1st no limit post; I'm another refugee from limit; I've read the FAQs on this forum; sorry if this has been covered there or has been asked here a million times before ..

I'm getting the impression that one should c/r flops a lot less in NL than in limit, particularly when there is more than one opponent? In limit I c/r flops mostly for hand protection against the players to my immediate left, but also to mix up my game a bit. I try this tactic at NL but (at least in the limited time I've been playing NL) I find that flops tend to get checked around more. However, if I c/r less then of course my game becomes more transparent. I would appreciate any advice or pointers to the basic principles of when to c/r flops in NL, particularly as compared to when to do this in limit.

Again, apologies if this is too vague a question or if it has been asked and answered many times already.