For my wordpress blog (hosted at wordpress.com / business plan / my domain ), I create custom ads which are basically a .JPG image linked to the advertiser.
These are not Google Adsense or jetpack ads.
What's the most popular /well-supported plugin/solution for me to create an ad (picture w/ link) , have them automatically interspersed between posts, and permit me to specifically place them in certain locations on the left & right?
I don't know if Wordpress.com as a hosting company has any restrictions.
The guy who ported my site to wordpress.com wrote a custom plugin but I don't want to be tied to this guy forever.
Thanks for any suggestions,