^ half right.
you gotta add a subid to the end of your links yourself so you know which ads are converting.
If you want to track by each ad to see which one converted you will need to append a unique SubID after the t202kw parameter. Such as 202kw=Ad1, 202kw=Ad2 etc...
Or you can leave the 202kw parameter blank and it will track conversions just fine, you just won't be able to figure out which ad converted for you.