Please, correct me if something is wrong Newdigital.
1-Signals sellers could make trades on their own computers manually or using EAs. No matter of the method the software will deliver the signal to the buyers.
2-Signal buyers could buy a product based on price and/or past performance of seller. They will receive the signals coming form sellers.
Any other subject is just a technical question. How the software is programmed or signals are delivered using some protocol and so on.
Because sellers are often

less than buyers technical problems/matters/questions are important to that side.
Also, most buyers do not feel interest in that questions. Buyers just want a product that works.
We don't need to complicate other people's life if we can't avoid that
