Flyer distribution is extremely effective if you are targeting a specific location. Take for example, you have just newly opened a tuition center in Ang Mo Kio. You want to build your brand awareness so that every family in Ang Mo Kio knows about you. Another example, you are a property agent and you want to serve only residents living in Bukit Timah area. You can actually distribute flyers to all the residents living around Bukit Timah.