yes you can! anyone can! just make a steemit ad with your username, like i use steemit.com/@ackza and i used that as mu steemit link for my reddit ads i paid $12 q a day on reddit to get, reached many thousands of impressions and even got liek a good 50 clicks or so, but yeah look you should buil it they wil come!
Build Youtube Ads, and mak them talk about steemit! use facebook and instagram ads to!
im gonna doa post later tonight or tkomor about instagram ads for steemit!