Where exactly is the popping? Front or back, left or right? Trying to get a feel for what you need to do to eliminate if you wanted to.
Generally, no pain = no problem though. But in some cases, its easy to fix like the example given above.
Cartilage rubs all the time when we WALK or MOVE for goodness sake. A little popping is likely not going to do anything unless you have issues with your diet. Excessive inflammation = poor repair of cartilage from wear and tear = faster you wear the stuff out.