I own Electric Rhythm Dance Club, a rapidly growing club on a very busy business sim, and we've expanded our upper level to include shopping, advertising, and games (camping and Lucky Money Chairs). We have 16 XL AdBoards positioned directly across from our Lucky Money Chairs (2 sections), so highly visible and subject to a continuous flow of retail traffic every day (thousands of avatars), as well as our regular event attendees. Rent is inexpensive and deals can be made for multiple weeks and/or multiple boards. Our traffic has been steady at 10k-15k daily and just keeps growing! Your ads are sure to be seen!
I'm also looking to do some cross-promotion with other companies -- especially retail businesses that would be interested in donating items to be used as prizes for our event contests. We would give the prizes out in folders that contain the item, your notecard, and your landmark, thus promoting your business and expanding your market!
Please IM Vivienne Sonnenkern in-world or stop by the upper level of Electric Rhythm to check it out!
http://slurl.com/secondlife/Nalu%20Cove/225/215/23/