That totally depends on what target groups you mean..
If you want to target specific groups for FREE then you must look for websites and/ or blogs that has your "target group"
Write to the webmaster / website owner and ASK for possibilities to market your product on their website..
If you do paid advertising then targeting specific groups is just a click of the mouse..
Most (almost ALL) advertising companies offer you to lasertarget your product to specific people / groups just by selecting them from a list..
That totally depends on what target groups you mean..
If you want to target specific groups for FREE then you must look for websites and/ or blogs that has your "target group"
Write to the webmaster / website owner and ASK for possibilities to market your product on their website..
If you do paid advertising then targeting specific groups is just a click of the mouse..
Most (almost ALL) advertising companies offer you to lasertarget your ...more