This is one of the most popular scams in online dating.
Nigeria and Ghana are notorious for their scammers and hence most people probably wouldn’t pursue a relationship with someone from one of these countries.
Key features of the Spanish Prisoner trick are the emphasis on secrecy and the trust the confidence trickster apparently places in the mark not to reveal the prisoner's identity or situation.
The confidence trickster will typically claim to have chosen the mark carefully, based on his reputation for honesty and straight dealing, and may appear to structure the deal so that the confidence trickster's ultimate share of the reward will be distributed voluntarily by the mark.
Military Singles Connection provides online personals services, including online profiles and photographs of single men and women, chat rooms and an instant messenger – to enable others to communicate in real time, a private mailbox to enable others to exchange personal messages, a public forum to enable others to exchange messages and information…
In its original form, the confidence trickster tells his victim (the mark) that he is (or is in correspondence with) a wealthy person of high estate who has been imprisoned in Spain under a false identity.
Some versions had the imprisoned person being an unknown or remote relative of the mark.