Greetings appreciated @crypto.piotr
Linkedin is a network for professionals.
The main idea is to allow both companies and independent professionals to contact each other.
With the creation of your profile you can specify your professional skills and work interests, so companies can locate you.
It has similar features to facebook. With this I laugh at some artificial intelligence and above all the possibility of finding or contacting people with profiles similar to yours, as well as you can import your email contacts.
I am not sure of the functionality in terms of creating a specific group or niche with the intention of exchanging group ideas. In other words, I don't know if this allow it.
Your friend, Juan.