When doing any form of online or offline marketing it is important to try and track the results you get from it. This may be the number or inquires or sales. This is vital to allow you to work out if it is worth investing in this marketing avenue and if it works for you.
If you set up an ad in a magazine or newspaper or do a leaflet drop then you may wish to set up a new phone number that is only used on this promotion. This will allow you to see how many people are inquiring due to that marketing.
If the marketing is done only, often this is easier to track as, with Adwords for example, you can easily see how many people have clicked on your ad and by using Google Analytic’s, can also track their steps through your site and see if they completed a purchase or sent you an inquiry form.