I agree with Linda that you need to do some research as to how you are going to optimize this site for search engines . Because you could have a great looking site and no traffic. I think that is the biggest problem for new people , the traffic. Because you get a great looking site and then you think , "ok, now where is the money", and then you start doing some more research and see that some of these sites drive 10s of thousands of uniques a day to get these huge profits and you begin to realize , wow, that is the missing ingredient , and it is quite a big ingredient. So, you really need to work on search engine optimization. You may be able to drive some traffic with PPC , but it can cost big money, and unless you have some separate landing pages it probably won't do much. And, you can write articles until you're about to pass out, you won't get enough traffic. I saw ezine article site management say that you should expect 1 to 2 url clicks per hundred readers , on average. And most topics get, low, low views, like 40 to 50 type low.
So the biggest deal is traffic. Everyone talks about it , but when your just starting off you kind of fail to realize how big of an impact it has on your success.
If you analyze how I ended up on this site it was because someone who owns this place did some very good seo

, and got this site to rank #2 in google when I typed in affiliate forums . And, I, of course, clicked it. So, I mean , you could have a site as grand as this , and if people can't find it, you will see a big goose egg in your accounts.
Additionally(haha, yeah I am going on a bit here, but I think it will help you) if your passion, hobby, joie de vivre,etc is something mainstream like collecting purses, shoes, jewelry, nfl, nhl or american idol you are going to most likely have a tough time ranking well in search engines. So, if you want to make money as fast as possible I would really get into some wacky stuff, you may not be into it, but that really doesn't matter(if your goal is to make money). Wacky is relative of course, but I am talking less obvious niches that you could use the bans with because ebay is such a powerful system. A niche like pin cushions, 1920s baseball cards, old movie posters, specific rarer animal breeds(best if you actually have one to take hundreds of pics and ramble on about ) , shoelaces, etc.
And while the bans is going to feed your site these great ebay ads you need to provide some content as well to make it unique and make users stick.