Well, this technique is still widely used. The thing here is not only about the backlinks you can get, but also about the reputation, you can earn if you make high-quality and valuable contributions
Yes, It is effective and still, peoples are outreaching for the guest post on relevance niche, But I think the criteria change in old days the did not see the domain age, DA PA Spam Score, CF, TF, DR, UR, etc... But now they check all the things and even now check the domain traffic too.
It definitely is still effective if you are doing it the right way. The thing with guest blogging is, that it takes a lot of time and effort to get one backlink. But if you focus on the bigger players in your niche (with high DA) and be able to blog for them, it is totally worth it in my opinion.
Yes, it is still working. The main criteria to choose the donor for me is are organic keywords. If the site has a large number of organic keywords then site has traffic, users. The more users on the site-donor the more clicks to your site!
In my experience, guest blogging is still very effective. However, you should create useful content for a site and not write simply for SEO purpose. This is when you will reach a more effective result.
Some will say "Yes" and some will say "No". Guest posting is effective for those who know how to do it in a proper way and less effective for those who just spin, copy the content, and post on the spammy website just for a backlink. If you do some research before writing, find the niche blog (with higher authority and having a good amount of monthly traffic) to post your content on then it will be effective for you otherwise you are wasting your time and money.
If you are a writer and have a specialist subject then there is no reason why you shouldn't guest blog. It is still relevant today, given that you still follow criteria's some as below. Your articles need to be authentic, so being a specialist in a subject will help with your content. Then there is the matter of where. You will need to reach out to people who have a good authority and high rankings in that field otherwise you're efforts may be in vain. Also try giving them 2 or 3 samples of your work so they can analyze to see whether you (and they) are a good fit.
Yes I like the guest post and that helps to get targeted visitors, but it also depends on relevant high authority website
I find that thoughtful, well worded guest posts can still help. I would read the articles and give my best incite. Good content is always a winner in my book. As far as SEO goes, contact the owner of the blog itself and simply ask for them to mention you either in the topic itself, or if you can have a guest post. If they say yes, your links will go up every time. If not, you may waste a lot of time trying to put them in.
Based on my experience, guest blogging is really effective. However, this is effective only if you create genuine, high-quality articles so that the blogs see that your goal is to create a quality article rather than simply marketing a link. I know this way is more time-consuming but it will lead to better results in the long-term.