Yes it's possible!! Some signature campaigns pay about 0.09/month around with the avatar bonus which is more than 1 BTC a year. I'm talking about betcoin campaign.
Am also looking forward on how I will be able to earn 1BTC in a year. But somehow suggestions here are very nice that we can actually do this as possible.
Go for gambling and you can make it in a single day
just kidding if you are not in hurry to earn 1 btc per year then I would suggest you to start with signature campaign.If you have capital try buying few bitcoin and take part in gambling events. If lucky you could earn few more bitcoins, just invest in a trusted investing site. Automatically with the interest from invested bitcoin you could get 1bitcoin in a years time.