Instead of collecting all the business cards at tradeshows and networking functions and doing nothing with them, why not follow these people up? Again they may not want to buy now but they might sometime in the future. For example I am not in the market right now for a new car, but in 2 year’s time, I might be. If a car salesman keeps in touch with me by continuously giving me ideas of cars to choose for the future, who is the first car salesman I am going to go to? The one who is front of mind of course.
I suggest you buy a card scanner to record all those business cards. Then find someone who works in the Philippines for $2 an hour to put them into an excel spreadsheet, send them back and then you upload them into your database. It is a quick way to build your database fast. The more prospects you have, the more you will sell.