I've been listening to all the tv and radio ads as well as the media spin that doesn't - for a slight nanosecond - mention any health risk to this approach.
A dozen or so years ago I wrote a column for my regular Health Matters(c) column about children's health. This was an article focused on back-to-school issues and one thing I clearly indicated: It is those children who are not vaccinated that are the healthy ones.
About four years ago a small community school near where I was living in Idaho had to close down because so many of the children - all had received a flu shot - and over 90 per cent of the children came down with the flu. This was the first year FluMist was readily available. It was a $70 "shot".
I posted an excellent article about FluMist at the time sent to me by my colleague, Dr. Sherri Tenpenny. Her major warning was to alert patients and Internet readers of the potentially serious complications that may come from direct and passive exposure to the new vaccine.
Flu Vaccine may Lead to Asthma in Infants - Children under the age of 3 years who receive the nasal flu vaccine (FluMist) appear to have a four-fold increased risk of asthma within six weeks following the vaccine. Researchers think it may be that these children have never been exposed to a flu virus "and might respond to this vaccine differently because of this." This is just one of the many risks of the FluMist vaccine. The flu vaccine can actually weaken the immune system and make you more predisposed to the illness. It is certainly not the answer to avoiding the flu.
FluMist contains live (attenuated) influenza viruses that replicate in the nasopharynx of the vaccine recipient. The most common side effects include "cough, runny nose/nasal congestion, irritability, headaches, chills, muscle aches and fever greater than 100° F." These symptoms are nearly identical to those the flu vaccine is designed to prevent. 
A cause for significant concern is the vaccine's most prevalent side effects: "runny nose" and "nasal congestion." It has been documented that the live viruses from the vaccine can be shed (and potentially spread into the community) from recipient children for up to 21 days,  and even longer from adults.  Viral shedding also puts breastfeeding infants at risk if the mother has been given FluMist. 
Dr. Tenpenny went on to write that
"... shedding via nasal secretions, the virus can be dispersed through sneezing. What is the normal physiological response when an irritant enters the nasal passages? A sneeze ... sometimes a big sneeze ... sometimes several big sneezes. Therefore, the risk for shedding--and spreading--live viruses throughout a school, church, workplace or store--especially one which is administering the vaccine.
In the section of the FluMist package insert labeled "PRECAUTIONS," the manufacturer states the following warning:
"FluMist® recipients should avoid close contact with
immunocompromised individuals for at least 21 days."
“the FDA Approved thimerosal/mercury-free FLU MIST (MedImmune Vaccines, Inc., Gaithersburg, MD) vaccine may create a super strain virus plague”, warns Dr. Mark Geier.
A medical researcher at New York Medical College warned that of reservations about the commercial use of vaccines using live influenza viruses, such as FluMist. "The 'weakened' viruses in FluMist," he said, "are 'real.' Like all live virus vaccines, they are real infectious agents whose potential hazards should be fully understood by the public and by prospective vaccinees."
"Although preliminary trials have been promising," he added, "we are still dealing with a virus which in order to replicate and immunize must produce some damage to respiratory tract epithelium; such damage can pave the way for secondary bacterial infection or colonization. Of equal concern is the potential of the vaccine virus 1) to revert to virulence by mutation of its own genes, or 2) to recombine its genes with wild type influenza viruses to form yet another virus with unknown potential."
"At the very least," Dr. Kilbourne warned, "the recent release of the live virus vaccine for commercial use should be monitored closely."
Another expert in the field, one of the world's leading immunologists, Dr. Hugh Fudenberg, conducted studies that found that people who receive the flu vaccine yearly for three to five years increase their risk of Alzheimer's disease tenfold. He suggests the culprits are mercury and aluminum in the vaccines. Dr. Russell Blaylock believes that a new mechanism, which involves mercury and aluminum as well the over-activation of the brain's immune system caused by the vaccines, is to blame for potential problems, including encephalitis.
There are things that can be done to keep well and avoid the flu by keeping your immune system strong with sound nutrition. In addition a number of nutrients may be helpful, including selenium, vitamins E and C, zinc and the carotenoids, vitamin D3 to help prevent over-reaction of the immune system, acidophilus and proteolytic enzymes.
Please proceed with care and knowledge.