You may want to have recurring survey, that is to say use the same survey structure for the same set of participants and compare previous responses of one participant to those given later by the same one. This way you can find out changing trends in the answers.
For instance let's think of a satisfaction survey intended to customers having bought a car: you could run the survey one month after the purchase and then 1 year after and compare the answer changes.
For such recurring surveys, you may find it convenient for the participant to see the survey pre-filled with his previous answers when he participates for the second time to the survey.
LimeSurvey has a specific feature called "Iterate survey" which enables to manage such surveys.
Prerequisites for this feature are:
How to run the survey the second time: