I assume that you have a buyers list already and asking the best way to market your deal to your list.
The best way to market a property is to send your list an email that tells them you have a great deal and give them enough info to get them interested enough to follow a link to yuor website. On that site you should have all of the information they need to make a buying decision. Include pictures of the house. Pictures of the street; and pistures of the comps you used to establish value. Adding audio andd video will make the site even more powerful. YOu can also follow-up with fax blasts and voice blasts.
Lou's reply is exactly what I do when I've got a deal I need to move fast. I have all the specs, pics, and video on my site and I blast the property to my list. If it is a good deal, it will sell fast from the exposure. Most of my buyers know that I don't "fluff" the numbers on my deals. Gotta build trust and don't B.S. about the numbers!
On the other hand, if you meant marketing your list to other wholesalers to try and sell their deals, the key to doing that is through networking. Actually going out and meeting with other wholesalers in your market can make you big bucks. You don't even have to have your own deals to make money wholesaling. I've sold a bunch of deals for other investors that couldn't find buyers for their deals. If an investor has a deal they can't sell, I can often line up a buyer for them based on the specifics of their property like location, price, amount of repairs, etc. Get to know the buyers on your list, including what they like, how many deals they can do at a time, and how they did on past deals you sold them will work wonders for you down the road. I've got buyers that will commit to buying deals "sight unseen" by having a good relationship with them and knowing what they want. Let them know that you care about their success and that you want to find the right deals for them. This can be a cut-throat business, so showing a little compassion and a personal touch will go a long way toward building good relationships.