In our days people are going info networking via social networks and this approach is standard already. Even if I do the same, I still prefer not to discuss any valuable issues via Facebook Messenger or LinkedIn. There are many reasons for that, including
- What are you gonna do if tomorrow all of your messages disappear? You will lose all of your history of communication. There is no simple way to back them up.
- What if everything you type on Facebook Messenger will be saved in cloud forever. I do not see any advantage in saving all of my commercial information forever.
- You can not control message delivery. Unless you’ve got a response you can not be sure that the recipient have seen your message. Actually you can not be sure about that even if you’ve got an answer because Facebook doesn’t digitally sign messages.
- All of your correspondence could become public due to a leak, or you may have to pay to a blackmailer to keep it private. There were incidents in the past when unclear amount of private data leaked to cyber-criminals.
- Facebook Messenger app have access to any data stored in your smartphone. It uploads to the cloud all of your contact data, could upload files (you never knows).
Thus, even if social network could be an interesting source of new social relations, it does not look like a good idea to discuss private affairs/family matters over it. The best practice is to assume that communication over social network could become public at anytime.