Hey Christhewriter..
Good Points for low budget travel. But somehow i would not agree withe some of your points like eating the street food. Well I think for cheaper meal one must not put his health in danger as we do not know what the quality of food is. Also, the prices of taxicabs are not same in all countries. I am from Costa Rica and in our country people can hire different transportation services whether shared and private. Shared options costs less as compared to private. So, it better to have a thorough research while visiting any country.