Chinese citizens:  would you say that you or your friends are interested in doing homestays with Americans?  What service would you use to find hosts?   I don't think maiyi.com, xiaozhu.com, or tujia.com list foreign rentals.  Is there a similar service written in Chinese that you could use or would you just use airbnb.com?  Also, what parts of the country would you want to visit most?  Would you want to visit the Mall of America in Minnesota?