selfie is a photo and you can monetize your photos like you do for video on youtube and get rewards in YOU (SELFLLERY money) tokens for Likes received, also every user will have a profile, if you are posting selfies then you'll likely get views and likes and some advertisers will only chose those people that have certain amount of likes and views for their campaign as happening here when bounties chose members with high rank over others. Campaign would be something like asking to make photos about their product, in case maybe some advertiser ask users take selfie with logo etc.