I saw this a while back. It isn't clear; but my interpretation...

I saw this a while back. It isn't clear; but my interpretation is that TIM are paying for marketing and prizes [given out with marketing efforts]. In other words, the whole pre-registration thing ("miggster spinner", prizes for referral pre-registratnts, etc.) was a TIM thing where they would be paying for the prizes given during this promotional period as part of their marketing spend. It's quite different to the prizes that are offered to competition winners for people who actually participate in the miggster platform once it is launched.

In short, my interpretation:

• TIM pay for prizes offered during pre-register period, as part of the marketing cost of the whole pre-register event / strategy.
• EM1 pay for prizes offered to competition winners for people who actually use the platform post-launch.