Its not a case of becoming an allergy "expert", people are more aware now than they ever have been about what shares their environment, if a customer phones up asking about anti allergen treatments then surely if the person answering the phone can show that they have a bit of knowledge in the field they are more likely to sell, if that means reading up on the subject and finding out what products are available then that's the way to go, if ten years ago somebody had said that a lot of small businesses would have websites promoting their goods or services they probably would have been laughed at, make the same statement today and the majority of people will reply that they have looked online for services or goods at some point, 400 years ago the world was thought to be flat, now its round, with progress peoples perceptions change, yesterdays big news is now history or out dated, if you jump onto a bandwagon as its becoming fashionable then you can ride it out until its time to get off and look for the next fad, Andy