According to me free hosting is suitable for personal or small business website whereas we should opt for paid hosting if it is for large websites which receives considerable traffic.In free hosting we have many limitations like unwanted ads, down time problem and certain features will be restricted,which does not suit for large business.So paid hosting is better in many aspects instead of suffering with a free hosting and then switching to paid host. For economic purpose one can get web services at low cost from host providers like 9cubehosting.com wherein they provide a very good freebie package along with their hosting plans.