This is a screenshot from dxwatch.com showing my callsign was spotted by DX or local station. The concept is very straight forward, if they heard you, they will update the cluster with the following info, callsign and frequency. Any station who see your callsign will tune their VFO to that frequency and try to make a contact with you. Someone maybe think that this is a “cheating technique”. Haha, don’t take it serious.