YTB is based on a person to person comunication. They do not allow any mass non personal contact. Yes being an RTA you get your fully functional travel and booking website but you must refer folks to it. YTB will not allow any spamming what so ever.
As far as listing in google, google has certain criteria in the order that they list websites on searches. One of the items they will penalize you on is duplicate website content.
They want to list on target unique content first for your search words you are searching on.
Since all YTB travel and booking sites are the same content, they will fall into the lower parts of the search results.
RTA's are allowed to make their own websites and refer folks to their YTB site but they must be careful and follow the rules of YTB on advertising. If you mention YTB in your content you must get a release from YTB, they will not allow untrue claims at all.
Hope this helps, I am a YTB rep and life could not be better.