Sorry to be the fly in the ointment, but I don't think revival is happening and I'm with Koey, we have a low church attendance in this country. And it isn't improving by leaps and bounds. I'm not meaning to put down anyone's individual experience, if your church is growing then that is great, but I don't think those limited experiences are negating the backwards steps elsewhere.
I used to also go to a church who grew to 1500+, and was a youth leader of a 200+ youth group. It was built from a small church too. Problem is, a small church dynamic doesn't work with bigger numbers. People start falling through the cracks. Saying "I'm part of a 1500+ congregation church" eventually left me cynical, because no mention of the people who have left disgusted at the actions of the pastor or cliquiness of the congregation. When I visit there ocassionally now, there is ONE family in the entire church I know who isn't on the pastoral team that went there when I attended. To be honest, if the church had a shred of humility and honesty with the congregation, they would have 3000+ members. And the saddest part of it, those that leave most often also leave the church scene altogether. So saying numbers for growth is illusory. Not to say that this is always the case though.
Why is the Christian church still slipping in Australia? I see the reasons as fourfold:
1) Too materialistic - Australia suffers from every Western modern society's ailment, materialism. Many churches are becoming knitted in the the ethos and values of capitalist society. We see a preponderance of prosperity doctrine and self interested Christians in churches, and it's growing. Where is revival? Not in the US, Britain or Australia, traditionally all "Christian" nations, all rich, all without systemic religious persecution. It is in China, Bogota, and Africa where revival is occurring, the places with the poorest, most needy people, where much persecution is forced from above. Which leads to......
2) Lack of community - We all have cars, mobile phones, TV's, the Internet, our own houses, own jobs, all of which destroy community and create a new one in modern capitalism's likeness. Jesus said "Blessed are the poor in spirit", but the more I think about it, the more I wonder if the poor in general are blessed. The poor have community, the rich worry about getting more stuff. If there was a strong Mennonite or Amish community in Australia, I would drop uni and join it ASAP because the desire for community is so strong, and others have told me of the same feelings. Even non-Christians desire community. 99% of all pre-Vietnam war posters appealed to a sense of community or a threat to that community.
3) Too sold out to the world - Evangelism has mirrored politics in that now a fancy one-line slogan that seemingly demolishes all counter arguments can convert people. It does nothing of the sort, lines like "God said it, I believe it" is going to convert shallow people, and disenfranchise people who think it through even more from the church. The church is mirroring business in it's advertisement techniques and it's everyday practices. It's mirroring the media in that whatever gets the most ratings gets the coverage. It's sickening. But up til now, these problems have been Western church faults, not just problems with Australia. Until point 4.......
4) Apathy and Cynicism - These are virtually national traits. Churches try to force unimportant things, like church attendance and the taking up of collections, as though they are vital, and this is going to work against these almost institutionalised Australian national traits. Churches in Australia need to restructure their way of running the show back to a more traditional approach rather than authoritarian methods. If a church preaches the Word of God and strong community is present, I'm not going to be anywhere else, am I? Or I'm not going to hesitate to give more than a economically am able, am I? I have not been to a church in Australia that I've been able to honestly say it was better than "just OK". I'm not expecting a church to be perfect. I'm not expecting it to be large. I don't expect it to have programs. I don't expect the pastor to tell funny jokes from the pulpit. I want to belong to the community there and learn about the Word. And no church I've been to has been consistent in that.
Again, I'm not picking on any one individual or any one church here, and not every person or church in Australia is like that I'm sure. But this is a general view from someone who has "fallen through the cracks".