I have hosted people from all over the world and have also surfed in many different countries. The vibe of this global community was strong, happy, and warm. Everyone was always eager to meet and share their cultures!
These days, the site has grown far too much. It is no longer spread word of mouth between travelers. Now media has spread the news and people such as myself are bombarded with couch requests on a daily basis by many people with near empty profiles looking for a free place to crash or even to 'hook up'.
On our last backpacking adventure it was a challenge even to get a reply from potential hosts. There only seem to be handful of core couchsurfers that still make the most of the website and reflect a true couchsurfing spirit. Lets hope things will improve in time.