Hello! Let's say I manage a WordPress.com site for a client of mine & his site draws significant traffic, in a level which is OK to sell ads.
A specific company thinks the content of my client's wordpress site is relevant and wants to place an ad.
In what format they should send me their ad banner? How many ad banners can I place?
How do I place the banners in my client's WordPress site?
The blog I need help with is skassios.com.