Its great that you do that. A lot of people don't realize that even once they have used up all 50 of their clicks that you can still click and give to others. They still get the gifts even if you don't : ) For some reason my gifts are on a different time frame. My 50 clicks reset around midnight, but the ones that allow 30 restes 6 hours early. 

KK i am in the UK my gifts reset at midnight when I am in bed i get up and have to go to work thereby i lose 12 hours of giving gifts - I am now clicking on what I want (using all my gifts up) and sending gifts to ppl that I no longer need coz they still get them