We kindly invite you to take part in our experiment, which aims at studying how users search for products (e.g., digital cameras or laptops) in online stores.
To make it worth your while, the first 60 participants who successfully complete this experiment will be entered into a lottery for three prizes (each is in value of 500 HKD). It could be you!
If you are interested in, please click the following link to start the experiment (the whole process will take around 30 minutes):