Hmmm...so is the general feeling that one shouldn't apply...?
In seriousness there are those who do fall foul of these sorts of scams.
Have a look here for some incredibly funny scam baiting - basically you reply to the scam ad acting in all good faith and see how long you can keep baiting the scammers - absolutley hilarious what some of these scammers will do to secure your hard earned cash...!
419 BAITER | Scambaiting: Stringing-along 419 Scammers for my Amusement
and if you want to know how much fun this can really be :-
419 BAITER - The Johnson Njoku Letters - Page 1
Love the made up names (made up by those baiting the scammers) :-
Patti Kake, Shanda Leer, and Father Hershey Barr
and what 'church' does Father Hershey Barr minister at :-
Our Lady of Perpetual Piercings Holy Church
18580 Roflmao Rd.
Evansville, IN 47747
Just another thought - has anyone actually contacted London River Cruises about this ad...?