1. No intention of returning to your home country ...... Consulate interviewers know that almost all the applicants want to go to the US forever but they only allow those who make the best effort to hide this fact.
2. Financial inadequacy ....... unless you have a scholarship, don't even bother applying if you are poor!
3. Lousy conduct and meek body language ...... this works against if you apply to any reputable organization. The very fact that it is tolerated in most Indian organizations tells you a lot about the quality of these Indian organizations!
4. Incorrect information ........ you can only do this and get away with it if you are from Andhra.
5. Unimpressive academic credentials and lack of knowledge ...... don't bother applying if you graduated from any of the many "unknown" colleges or universities that have sprung up across India thanks to Cong Party’s “RTE” campaign. Your GRE and TOEFL scores should be very high if you belong to such colleges or universities. Unlike India, USA doesn't pamper backward caste people and their incompetence!
Anyway, you don’t need to heed any of this advice because where there is a will, there is a way!