Affiliate Marketing Secrets

I want to buy an affiliate website that will hopefully make some money. I have found two options: 1) I make my own site and connect it to the affiliate of eBay or any other company that offers affiliates, 2) buy an established affiliate website from eBay which has a domain name and everything and costs about 5 dollars monthly, also it has everything uploaded on it and I don’t need to update new stuff it cause it updates itself.
What do you think? Any advice would be great

Would it just be that all your friends are on your current SNS?
Would it be a new feature of the new SNS? If so, what would that feature be?
Would it be that the site is more of a niche community?
Etc…
Thanks for any input!

I have a 3-month old site (my first) with which I directly sell my own product (as a vendor) through Clickbank. However I have just seen that a search on Google for any of my keywords now only brings up a certain affiliates hoplink in place of my site. The meta description is mine and the SE results/rankings match those in my Google Webmaster Tools so it definitely should be my direct site link coming up and not an affiliate.
My official site is http://www.teachenglishabroadguide.com
The result that comes up is
http://www.teachenglishabroadguide.com/?hop=andrewghay
A search for “teach english abroad guide” will show this on the first page.
On yahoo it looks fine.
Can anybody tell me if this is some dirty black hat trick by the affiliate and what I should do to get my link back (preferably without losing my rankings)?
I’d be very grateful for any help.

So I am considering building a profitable niche site, I did do some keyword search, I am wondering what is the criteria for a good niche, 1000 exact searches, 10000 exact searches or others ? Can you suggest a way that I can find a good niche? Thanks.

In your text it should say. But a niche is the the function and organism has in it’s area.
An example is a giraffe’s niche is feeding on the canopy on trees. Just look at the animal and figure out what it mainly does in its environment.
This site should help you.
http://animals.about.com/od/naturalhistory/f/whatisaniche.htm

I have a new event website, where we provide locations for all kind of events, parties, and gatherings to be held. As of now we only provide the locations for these events. We would like to work with affiliate programs to assist the event planner with what they may need to make the event possible. From chef’s, to dj’s, to invite card/thank you cards, photography and people can services of this nature. If anyone has any ideas for other services event planners could use please do tell. My questions is, does anybody know any good affiliate programs i can go with for this project?
Check out the site
www.mansion-ent.com
Thanks in advance!