They are criminals that attempt to deceive a victim into sending more or performing some other activity that benefits the scammer.
I apologize for the long text, but for several years I have been trying to find you and have the happiness to personally tell you my joy.
The things this girl can do all by her lonesome make you a true believer in the power of self-satisfaction.
Continuation: so many people and your time is probably limited, I hope that there will be such a possibility again and I'll meet you on Skype.
If you have an email address or a phone number, please report them on All the best.