Yeah, man. It is basically like a minefield. So many similar sites are wanting your CV, money and contact details for acting jobs, but quite seldom will there be any actual work. It is like you have to have some friends in the business who are already established and can put in a 'good word' for you.
Basically, I thought being an extra would be like a toe in the door, in order to get some quality work. Hell, I have never really cared for the payment side of it. To be honest, I just wanted to be featured in something, get a mention, and work on building up a portfolio. I've seen people in very minor roles just saying or doing a few words or movements but then not appearing again anywhere in that film, but it's still work. You get acknowledged. You get to say 'I was in that' and tell it to others as it is on your credits. But yeah, unless you know someone who says you come highly recommended, it is a waste of time and money to advertise around.
Honestly - it's hard work in itself finding work.