How transparent do sites like Alibaba.com make import-export- transactions? Would you still worry about fraud?

Visit www.alibaba.com, www.trade-india.com, and www.europages.com. Compare and contrast these Web sites from the view of the seller to the buyer.
Do you think most trade between countries and companies might eventually take place through sites like Alibaba.com? If so, does that influence your interest in importing and exporting?