As part of the free services we provide at Mentaso, one of them is a Directory Service where business can add a listing, so others can find them.
http://mentaso.com/free-bitcoin-directory-just-add-your-business/
http://mentaso.com/free-bitcoin-directory-just-add-your-business/
Its a very good effort as far as you are asking for any amount specifically as i have check your website and you guys only accepts donations that can be any amount, for your service. Also a very good suggestion for you, you can mention the traffic of your website which will definitely catch the eyes of the advertisers. Good luck
One more thing.
We do articles on established merchants to promote their business and offer our readers some useful content. Our hope is to grow and secure the Bitcoin community as a place of trust and evaluation for newcomers to the Bitcoin world.