That is a very general question! Need a clearer description of what you are looking for before someone can answer... what kind of site?
Buying links in DP sales threads... bum marketing... social networks... search engine organic listings... a little of everything!
It's such a broad question that is really quite hard to put an answer to it. However, in the words of John Reese 'over-delivering' is key.
Hmmm, let's see how many buzz words I can use. No but seriously that is probably too broad a question. I test as many methods as I can and keep the ones that work. So my answer is the only strategy I use is TEST.