Whenever I give anything to my customers and a shot is needed, I will always ask their permission first. Some customers may not like it so I always respect their decision. But I would be very happy when they agree on the photography taking.
Those photos taken are not posted anywhere else except at Chang Jiang facebook page. It's also a kind of promotion for items that I gave.
And I always come out with contests so as to attract more people to join our page. It's mainly for the fun of it although I always prepare gifts to all the participants. I always encourage my customers to take part. I feel that our relationship gets better on the long run.
Enjoy the contest!