As far as my knowledge goes, there is no topic that drives traffic to your website. Whatever be the topic, what matters Is how you present it. Let me list out a few tips on this aspect -
1. Concentrate on "How To" guides and Tutorial
We normally search Internet when we are struck with something. That is why the how to guides and tutorials undoubtedly fetch more traffic than any other genre. Whenever a visitor has an issue , he expects to the get a step by step guide to solve his problem.
Some bloggers feel this kind of a blog will expose their business. Nothing to worry here. A 3 minute video will not risk you anything. Such posts establish you as an expert in the concerned field.
2. Make use of lists in your blog
Post your information in a listed view. This approach will be helpful in getting the required information in an easier way. This is one of the effective ways of getting more traffic. Check the host of websites - they give "5 best travelling apps", "101 ways to stay younger". Do I need to explain anything else?
3. Links and lists
This is another good way to draw visitor's attention to your other resources. This will make them get familiar with your way of working.
Whenever a new product or service is launched, people generally look forward to the detailed review so that they can take a purchase decision. You can either go for a straight product review or decide to compare between a couple or three of them. You need not necessarily review a particular kind of product. Books, Software, Malls- Anything among them will do! If you can establish yourself in this genre of blogs, you may also get gifts to get reviewed on your site.
5. Cheats, Codes and such!
We play games on PC or our phones, and get stuck at some level. What we tend to do is search for the cheat codes on the Internet. Though it may appear silly, that's the perfect everlasting topic for a blog.
That's not all. There are plenty of such ideas which include Interviews with big shots and embedding videos from your YouTube channel.
Live....and Let Live!