advertiser

Etymology

From advertise + -er.

noun

1. One who advertises.
   The dirty secret of the internet is that all this distraction and interruption is immensely profitable. Web companies like to boast about[…]and so on. But the real way to build a successful online business is to be better than your rivals at undermining people's control of their own attention. Partly, this is a result of how online advertising has traditionally worked: advertisers pay for clicks, and a click is a click, however it's obtained. 2013-06-21, Oliver Burkeman, “The tao of tech”, in The Guardian Weekly, volume 189, number 2, page 48
2. A periodical in which advertisements can be published by individuals.