Just to clear things a bit right from the start, by this niche I mean the blogging, making money online, Internet marketing niche(s). Yes, assuming you will put in the same amount of work, this niche will earn you less that pretty much any other niche out there that is not addressing an Internet guru audience.
Here is why.
Getting traffic in this niche is much harder than it is in other niches. I tested this a while back and the results were astonishing. At least for me they were. I knew that the blogging niche was very competitive, because everybody in it is good at blogging, promoting, SEO and so on; but I did not know it was that competitive to successfully run a blogging blog or an internet marketing blog.
I compared the traffic stats of my blogging blog with one of my other blogs, both having approximately the same age and the results were mind blowing. For the other niche blog I received 3 or 4 times more traffic without putting in any efforts to promote it, while for my blogging blog I have to really work my ass off to see some traffic. So, there you have it.
People visiting your blogging blog are less likely to click ads or buy stuff from your site than a 16 year old girl looking for make-up products. The audience we are targeting is much more selective when it comes to spending money online.
If you want to make some money out of it you need to put in some serious efforts. Sell your own product or services, write e-book(s), work with the customer. You cannot just throw a bunch of AdSense units here and there and expect a decent income.
The blogging niche has become a pretty big niche. There are a lot of people searching for blogging related stuff. This is not necessarily a bad thing, because your blog will be exposed to a bigger audience and will get more traffic.
However, the traffic will not be as targeted at it would be in a narrower niche. Therefore, the conversion rates will be smaller and the traffic will lose value.
This is something that can be fixed by narrowing down your topic and focusing on a mini-niche, like blogging tips for beginners, SEO for WordPress, guest posting, how to build a list or maybe you could target visitors by location.
There are lots of possibilities here. Anyway, the more targeted your audience is the more value it will have.
Over to you
I would love to hear your opinion in this, so please leave in your comments bellow. If you also run blogs or websites in different niches it would be interesting to hear you out telling us a bit about your experience with making money in various niches.