Making money with an online roomate service is a good business to start. …

What you need to do is get a website designed for people looking for room-mates all across the world to share their rent. .. Make sure that the website is categorized and indexed properly by country, city, male, female .. and so on.

Most people start this type of sites and instantly want people to pay to list their ads … THAT IS A NO NO.
When you start this website, .. you will want people to list there room for rent for free .. Use google adsense, yahoo ads, cpm ads OR sell banner spaces to generate money at first .. I will suggest adsense & selling banner ads.

Once your website has grown and people have spread the word about how great your site is, .. Then you can start charging per listing .. Or you can charge per / more text. .. You can decide what works best for you.

To promote your new business …
* Use google adwords
* List your website in all the search engines & some good directories.
* Leave your signature in forums & also tell people about your site there.
* Buy banner spaces from adbrite & adengage.
* If you have extra cash … Once your business has grown .. Use tv advertising, if you leave in countries where you are certain it will bring new paying customers.

So, .. there you have it .. Enjoy this new business venture, if you decide on setting it up.