The interests must match!
One thing is for sure: Selling football scarves outside the opera house is not a very lucrative business model. Hence, its not done by anyone. However: If advertising is aimlessly distributed, you are practically doing the same thing. How do you know who is actually interested in a campaign/product and who isn’t? The answer is: Content and interest-based Mobile Marketing! Here, the interests of the users are crystallised by our mastermind DaVinci by means of the installed apps, then saved, updated and processed for further utilisation. This gives you the opportunity to actually approach the people where there is a real chance of arousing interest. In turn, you campaign can be promoted more cost effectively than without this knowledge.
With your customers its the same as any other relationship: if the interests are widely divergent, you can save yourself the effort to begin with.