I want to build a site like Facebook to share my traveling interest with other people. Is is difficult and expensive, anyone? What should I do to get it started?
Your idea sounds great. It's difficult to differentiate your travel site from many other existing travel websites. It's not too difficult and expensive through. If you are not a technical person, hire someone you can trust, share you requirements and they will develop that site for you. I worked with www.younetsocial.com several months ago. Recommended. Hope that answers your question.