Niche is user topic like what kind of personal fashion you belong,even what you like. In short niche it belongs to you.
Most Relevant Niche
Relevant niche is what are peoples mostly search,
need, wants, like videos, article, fans, music, celebrity, technology, recreation, and others.
Top Relevant Niche,
Most Popular keywords in Search engine like google, bing, and yahoo, The top relevant niche is about video's,
Your niche is about video your'e primary short tail keyword,is about video,The top relevant related niche of videos are, free video, free download video, watch video, watch video online.
.:: Google search users, Mostl sonsumer search in short tail keyword and long tail keyword, the higher keyword competition through search [SERP]or search engine result page,the more the more relevant niche it is.
.:: Bing Search users almost the same basis with google the difference between google and Bing search engine mostly users are foreign like US,UK and a lot more .
To find good and relevant niche,
The searchable niche or trending topic today,
Just like this niche!
Celebrities Your relevant niche is,
movie, actors, actress, model, celebrity headlines, tatoo, gossip, look a like,
The Above Example is the basic niche
SiteAdWiki - provides what are the higher Niche competition through search engine.
The Car Niche:Car insurance, Car loan, debit consolidation,
Tips to build quality backlinks niche
Simple way to get powerful niche relevant backlinks
So here is a simple way to get some very good backlinks from forums in your niche. Getting links from forums are actually very good links, because forums have a lot of authority. Especially moderated ones.
I had a website in the motorcycle niche, and so I made a bunch of posts on a motorcycle forum.
1. Make more posts.
2. Wait for those threads to get buried.
3. Edit those posts and drop your backlinks.
Because most of the time those threads are never going to get revived, you have a very high chance that those backlinks will stick very well.
Its a pretty simple method, there is not much to say about it, but I just wanted to share that. Really, the key is to find forums that will allow you to edit your post a long time after you posted it.
If you want to take it one step further, use different accounts for every post. So if a moderator sees one of your posts, then at least all of your links wont get compromised.