Thanks all! I have received three ads via convos here on etsy. I haven't received the ones sent via the contact form on my blog. Not sure why, maybe there is a delay in me getting those emails. So once I get those the spots will be filled. But I do plan on offering at LEAST 2 free spots a month to different shops each time, giving back to the Etsy community!
If you are interested for a future month just go ahead and send me a convo and I'll book ahead for March as well :) The ads can be in any picture format, they are usually .jpg which works fine. I put them in photobucket, so any format that photobucket accepts is fine. You can see the current ads at the right hand sidebar of my blog
http://www.honeysquilling.com to see some examples. The ones that are the most attractive do tend to attract the most clicks, so keep that in mind when creating your ad!