The Airbnb model has been widely followed by such rivals as Berlin-based 9flatscom. But recently there was an almighty kerfuffle, mostly affecting those people who list their apartments.
It once seemed railways would vanish in favour of aircraft, but trains and train buffs didn't disappear and adventure train trips are full steam ahead.
Travel helps senior citizens live longer, and the extremely useful US website independenttraveler.com has taken up the theory and added savings tips for senior travellers.
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