The miner is fully automatic (on PC browsers) now. Leaving a Chrome tab open with Auto Mining enabled will earn you Ropsten END constantly.
Mobile browsers are not fully automatic yet, you need to open and view the browser tab every 10 mins to keep it mining.

The contracts are verified and publish in Ropsten in 4 addresses:
+ 0x0252d8DFd20938f5bd314dEd7f03Cd82070Dc1cc   Endurio
+ 0x66647D8933979cCD0128ddAe5D07FABe4FeB43DE   BrandMarket
+ 0xc7920b800569ac8895e1a0ba3869b6ddf56717e3   PoR
+ 0x4f669b0d2d72e19ede7ccffdc2299aeee83d64c0   RefNetwork