Doesn't matter. See https://www.welchername.de/ for example. A first look won't tell you, what software is used. Checking the source code quickly reveals it.
An really good example. For many proects it really is no problem that somebody could identify the software you used but you don't want to show your users which cms you used either. I just wanted to point out that there are plenty possible reasons to purchase this option.
A possible reason is never nonsense! Maybe you are able to identify the software. But does that also apply to the regular user? Keep in mind you can customize and even replace the frontend.
Or???
… don't like the look of it,
… want to place their own copyright there,
… don't want to bother their users with somethin not relevant for them,
… want to create an unique community without reference to WoltLab,
… want to hide the software used to create the community because of security reasons,
… want to support the great work of WoltLab by paying this extra money,
… something else.
Do you get instructions for removing the copyright via CSS or language variable edits, do you get a "plugin" that you can install the usual way, which removes the copyright or something else=
You get the permission to remove it. It isn't really difficult. You don't need an instruction or a plugin.
The GDPR killed Google AdSense in Europe. Today you can make litte to no money with it. I removed it from almost all websites.
Not really a logo... 
For us both logos would be a great choice for Saint Nicholas' Day but not for Christmas.
They almost ruined Youtube in order to push Google+.
No. Nowadays you simple use your preferred web browser.
Using WSC is great because a lot of content can be added to a site that uses it and it will get indexed by Google, there isn't much on Facebook that Google cares about.
It's more than enough when Facebook cares about. You don't need Google to search Facebook. Actually you don't even search, Facebook find's it for you by itself.
With that in mind, a new approach, and "goodies" offered, for my upcoming website / forum project will be a high priority.
It might be the harder part, to attract new members, why should they search for your community, when social networks offer something that may not be perfect but is right there?
Forums usage has been in decline for well over 5 years, now it's much more obvious today. The web has changed with how people use it and forums are dying because of it.
Not only forums but small local social networks too. Some years ago there were tons of them. Forums are still a little bit tricky to use. You have to have an email address to register. And we can't even deactivate this required field. Make it easy, make it fun!
Sure. But getting a forum to its former glory is really difficult too. I'm currently trying it with Traumprojekt. It's old and it's big.
That makes me think of adult subjects, which could be any number of things from drugs and health to sex and relationships.
It would be very sad, if this is the only thing, forums are good for. But yes finding the right niche is crucial.
Alternative lifestyles - offgrid living, festivals, self-sufficiency, living on the road, alternative spirituality, vegetarianism/veganism and so on.
That's a topic typically covered by social networks. If you are registered on social networks like facebook you don't need another community. This forums are indeed dead. That applies to webdesign forums too, but for a other reason, you don't create your website from scratch nowadays, instead you use a cms. And there you ask for help.
The site has so far been funded by donations, with a little bit of money from Adsense and the Ebay Partner Network - During the good times I could afford every addon and upgrade going, but this month I'm having to pay for the hosting out of my own pocket.
What's the topic of the forum?
Not all but most.
You should never edit the files! There is a template editor in ACP.
Resolution? I thought they are vectors?
Some sort of linux. But does it really matter?
