Depends on your definition of making money. I have been around for about 4 months... I also belong to Xomba as well (so the numbers might be a little off) ... and I have already made $20.95 (as of today). Granted, I am not making a living off of it, but I did make money.
However, this is what I have found. The longer you are on here, the more hubs you will write. If you are consistent in writing hubs and staying active, you are more likely to be noticed. Not only on hubs, but also through the search engines (especially if people like what they read and start voting you up and interacting!) With that being said. Each month I make a little more than I did the month before. When I first signed up with my Google Adsense account - it took almost 2 months before I even made a penny. Now, while I am not making millions, it is coming in a little faster.
The money also depends on what the topic you write and the keywords. Obviously if you are writing a lot of poetry or rarely searched for items, you will not reap the benefits of money falling on your lap. You will however reap the rewards that writing itself gives a person!
Good luck - hope you make millions!