I found this post. The OP states:
A 30k Geek (GeekCash) reward is given to you after the job is complete.
I wasn't sure what this meant, so I commented:
What does "What does a 30k Geek (GeekCash) reward is given to you after the job is complete mean?
The user replied with:
Yes, you can download GeekCash Wallet at geekcash.org/#wallets and create a wallet address, after that I send coin to your address.
This confirms my suspicions. GeekCash is a cryptocurrency. The user is offering real money in return for a solution.