I want to ask. what kind of sites that best to build for someone like me. that dont have any unique/niche content, or doesnt have the ability to write some good stuff to upload to the site. or beside unique content base site, what kind of site that produce well from adsense? need your oppinion
Why not write a blog? With a more personal nature, you can probably get away with more language-wise, you'll improve over time hopefully, and as long as you keep offering interesting commentary, advice, and resources in whatever niche you choose, it could work out. I'm assuming from your sig that you have a games site and directory at least (unless you rented out the space). If so, why not sink more time into building and marketing those, and if they're working out, why not start more?
You can have a jokes blog. You don't have to be a joker to have one. Or else, you can do something like a directory blog, if you found something interesting, write a real short summary on it and link it. This way, you won't really have to be a good writer.
Bottom line is: Unique content is the key to attracting visitors, and those visitors are the key to earning some money with your site. And even if you're not that great a writer, there is probably something you can write about. Or otherwise, you might be able to do something with pictures, movies or games.