I've seen quite a few programmes and read plenty of articles about similar romance scams to those described on this thread. Men have also been scammed in this way by women who flatter them, prey on their vulnerabilities, then spin sob stories as to why they need money for something or other.. In the early days of the Internet I used to chat to loads of people in forums for word games etc - I had been warned not to divulge too much personal information and to be suspicious of anyone even hinting at wanting cash. I've always been skint so scammers would not have got any joy out of me. Most people I spoke to seemed nice and only one ever said something along the lines of needing money to get a passport - I told him to save up like everybody else.
We all like to think we would not fall for these scams, but remember the scammers do this for a living and the longer they do this, the more people they talk to, the better they get at what they do. They are skilled con artists, manipulators, hustlers. They are often articulate, have a good understanding of 'victim psychology', and 'victim selection'. In their chosen field they are smooth salesmen whose only goal is to, one way or another, get people to part with their cash and/or steal their identity to use in yet more fraudulent activities. It has been proved they even have records of people to target that are, unkindly, called 'sucker lists' - I guess the theory is if someone fell for one type of con they are more likely to fall for others too. Cruel deception(s).
There are plenty of genuine people, looking for love, or friendship, but everyone should be aware of these type of tactics and refuse if asked for cash - whatever the reason given for wanting it.