Are there any App listing sites? Apart from play store and all that I should know about

Recently I bought a domain which is in .de, the domain has many articles published in it which gets some good amount of traffic. Lets say that if I use adsense then it shall make $50 per week. Now most of the articles are useless and garbage content. For the niche's sake those useless articles are needed. It will be like writing a book on SEO but not talking about link building or on-page optimization. I hope you guys get my point here. So, what should I do? Those articles numbers are in tons and they create a huge database drag.

How much actual time does it take for a backlink to have effect in the SERP's? Backlink checker tools can take weeks to catch the link. Is there any way to check the link right away after creation?

One of my site just disappeared from the SERP's. The site is almost 3 years old. It has plenty of good content and good amount of regular visitors.

Along with it the site also receives a good amount of traffic from Google which will be around 60% of its total traffic.

I am confused here why our site will disappear overnight!!

With all the algo updates and what not!!! Do you guys think that Content Marketing is loosing its grip??

I mean we see that every day sites with more and more crappy content to be getting ranked.

Its started to roll out yesterday. And it will be rolling out for quite a few days. I want to know anybody seeing any changes in their SERP's. Since the last Core Update which was at June, was more or less a disaster.

Dear Friends,
Please tell me how to solve database error permission denied problem?

Is this a good idea? I mean they advertise themselves as an expert on cold emails. And the pricing are also reasonable.

What I mean is the no-follow, noopener, ugc all these can be present in just one link? By combination.

Back me up on this fellas.

I am having a debate with my friend. Converted clicks or clicks means leads right? They doesn't mean conversions. My friend disagrees.