I think it's probably better to train yourself to accurately estimate the calories in food than it is to assign food to clicks for two reasons. One, it's easier to measure calories in vs calories out if you use the same units for both. Two, adjusting the unit you are measuring (clicks vs calories) doesn't solve the problem of bad estimates. My calorie estimates are rarely off by the same percentage, often times my estimates on certain food will be off by 50% whole other food is spot on. 50% could be a choicing a few clicks less on certain high calorie foods causing your counting to be inaccurate.