Creating this type of backlink will give you what they called links on 'orphan pages' they are called orphan pages because there in the middle of nowhere, other pages on that site is not linking to it.
A much more valuable link is from a page that as tons of other pages withing that site linking to it if you create an hubpage page and add your link to it. you will want other hubpage linking to you. or if you have a link on tumbler, you will want other tumbler linking to you.
the reason for this is because all of their link juice from the other pages withing that site will flow into your page which will make your link much more powerful.
But how do will build this link?
well Is very simple, all you have to do is just interact with the sites that you building your links on. Here is what I mean by that.
for example, you just find a forum and you set-up a profile and added your site in your profile to get a backlink on that forum, Now at the moment, your forum profile page is very much an orphan pages, there is no other pages withing that forum that actually linking to your profile, and this will make your backlink not worth a lot.
But will can easily change this by interacting with the forum.
For example, if you make a post on that forum then your username will appear next to your post along with the link back to your profile page and suddenly your profile page is not an orphan page anymore.
Now if you create a whole bunch of post, then you will have a whole bunch of links from difference part of that forum pointing back to your profile and your link will become even more valuable.
Okay, I Get it, you don't have time to sit there and make a hundred difference of post on every forum. well, the Good thing is, you don't have too.
because there is another way you can do this much faster, for example, many forum this day have a thanks button that allows you to thanks a post that you like, and every time you thank a post your username will appear below that post along with a link back to your profile. Now you see where am going with this.
you can just go through and thanks a lot of posts and get a massive link back to your profile in no time at all. you can just to go through and thanks 600 difference post and get 600 links on that forum back to your profile page where your backlink is and now you can starting talk powerful.
how about a forum where you can add a friend, a lot of forum do that this days, and as a result when you add someone as a friend it will chuck your username on there profile.
So what you can do is to go through a bunch of the most established users on any forum with the high post count and then just add as friends, Now you have a link to your profile from other profile pages that have thousand of links pointing to their profile.
but this those not just apply for forums only, it actually works with all kind of site, in fact, most site this day are interactive and would give you a link back to your profile page every time you interact with that site in some way.
this can be by commenting on stuff, adding people, adding friends. liking things, for example, on tumbler you can just like other people post and get a link back to your profile, on Pinterest you can just follow someone and get added to the follower tab on their profile.
basically, most sites has a way to do this and it really not hard to figure it out. So stop build low-quality link and go for quality over quantity and I guaranty you will start to see the result improving