It depends on the geography you target. Say for US a site that gives information about public transport, traffic or share articles on weekend destinations will attract good traffic. Also, it will be important to have the website mobile ready or even better if you have an app.
According to the target region, you will be able to figure out the best way to attract audience to your site.
Thanks

I didn't find the right solution from the Internet.

References: http://www.warriorforum.com/main-internet-marketing-discussion-forum/1288900-looking-reliable-niche.html?

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