Long term Accommodation Besides backpackers

Gosh!!
I didnt think it would be so hard to find cheap weekly accommodation, Unless im looking in the wrong places!!

Im relocating to Aussie 2013 and im trying to find a place to call home for about a month, until I find work, I have looked at flatshares, but Im kinda wanting to stay in a hostel until i find work and then will look into either renting or flat sharing!!

Backpackers in aussie seem to only allow a few weeks, short stay!!!
Anyone know of any hostels in Melbourne please??

Anywhere in Australia is expensive.

I used the accommodation link at the top of the page and a shared room starts from £14 a night. Christmas and New year will cost a lot more.

You could check ads in local newspapers or letting/estate agents when you get there, but you may have to pay a month refundable deposit upfront if you find an apartment.

Unfortunately, Australia doesn't do super cheap hostels .
You can book up to 31 days at a time via Travellerspoint and using the same link as Cyberia mentioned I found only one property available in Melbourne in February with shared rooms - Elizabeth Hostel. $30/night but you don't have to pay utilities. I would say the average monthly rent in inner city Melbourne hovers around $800+ per person, plus you've got water, power, etc on top of that.
You could always just book a hostel for the first few weeks and then you may meet travellers there who are also looking to move into a cheap apartment. Best of luck!

Have you checked the flatshare section of Gumtree? Plenty of places there for cheap, or you could try their chouchsurfing section. If you want to do 3 or 4 hours of work in return for free accommodation and food you might want to try HelpX