Social media can make careers ... and it can also kill them -- and Nick Young thinks Instagram is partly to blame for Carmelo Anthony's unemployment status.
Tons of huge NBA stars have questioned why 35-year-old Melo hasn't signed with an NBA team since his short run with the Houston Rockets last season.
In fact, Dwyane Wade told us just yesterday Melo can still play at a high level and should be back in the league.
Swaggy P agrees ... saying Melo "still has a lot of basketball left in him" -- but suggests the real reason he's without a squad is because of the 'Gram.