Could I suggest to add more SNS options, such like , WeChat, Weibo(Sina) etc. with their icon.
Since there's lots of users in China cannot access to google+ twitter or facebook directly, while they are very glad to share to their customers or friends group, and it could help spread or share this master piece together with their works.
If there's options for users to choose what kinds of SNS most suitable, it would be even better, isn't it?
Thanks,--Leo