What's The Best Website to Sell A House Online in Australia?

yep - tho I think it's more raining one SECOND, flooding the next! Have you seen the ads for the insurance company - "only in Queensland..."

ooops sorry didnt mean to hijack the thread here

Any reason why you wouldn't go with the strongest local agent?

There are a few reasons I would advise giving it a thought...
1) agents are professional negotiators - what you save on their commission you will probably lose in the agreed sale price
2) the legal pitfalls in agreeing a contract with a purchaser face to face without the protection of a 3rd party agent (with indemnity insurance) are many and can be very serious (misrepresentation and specific performance being the two biggies)
3) it is very hard for a viewer of a property to speak their mind to the owner of a property and feel at ease prior to the negotiation process
4) agents have a working knowledge of the legal system behind selling a property and know the processes and timelines involved in dealing with solicitors/lawyers etc. This can be key in keeping things together when emotions run high.
5) agents have direct access to approved buyers through their database of enquiries
6) selling your home or property can be extremely stressful
7) any deal I have been involved in where my client (the vendor) has gone and talked with the purchaser has ended up with problems, it becomes too personal. Purchasers like to keep their distance from the vendor especially where large sums of money are involved.

The above points are from my own professional experience in the Irish market. The procedures may be different but the mechanics of the deal and human psychology involved is universal. Worth having a serious think about at the very least.