Task Tender is the newest Australian peer to peer marketplace connecting people who need tasks done with people willing to do them. The offer amounts are visible to all so you get the best price. It's free to post and only the worker ever pays a small 10% fee. You can post by category and location.
If you want to advertise a service you can do that too. It's also free to advertise and you only pay the small fee when you sell the service. This is a great alternative for anyone looking for a simple easy marketplace where you can pay or be paid in cash.