How am I actually helping friends?

When you click a friend's building, it resets the wait time. For example, the lemon tree takes six hours to produce Sweet Sweet Lemonade. If you click your friend's lemon tree, and your friend logs in three hours later, s/he'll be able to collect the money/exp and then only have to wait three more hours to do so again.

So the more valuable a building is that you click, the more you help your friend. It's not helping them at all to click the Simpson House.

Christian Photo wrote:
So my theory is that when I tap on certian buildings, it eleminates the waiting time for them to collect the money and XP. Am I right? :?:

This is an issue that has cropped up before. The consensus is that entoo is correct.