Hi,

I want to start a small business and Iīm looking for Online
applications, that you can use for a marketplace (linke ebay) or a
dating Service (like match.com) or a business contact service (like
openbc.com) anything, that you can built out of an  online toolbox
that you donīt have to program yourself. I donīt have an overview  of
the market, so any surgestion will do. Thanx for your help!!

http://www.guru.com/

https://www.cj.com/de/solutions/pub_marketplace.jsp

this one is also very easy to use http://www.homestead.com/

some hints
http://www.microsoft.com/smallbusiness/resources/marketing/online_marketing/building_a_web_site_the_easy_way.mspx