Write an article based on this "Verify that the cat is actually a stray. Take the cat to the local vet to be scanned for a microchip. Try to find the cat's owner."
Of course it might be you are followed home by a stray and the cat really needs a home. However, you may have been followed home by a cat that is simply lost and needs to find its way home. If is important to determine which is the case before you move forward. The vet can scan for the presence of a microchip that gives an id number for the cat. If the microchip is present, you can contact the database with the cat's number and reunite the lost kitty with its owners. It might be the cat got lost and has been living rough but is really a much loved family pet. If the cat is not chipped and appears to be a stray, you should still take steps to find the owners. It is ideal to reunite it with its family but it is also important to look for the owners in order to comply with local regulations, which vary from place to place.   Consider methods such as putting up posters describing the cat, contacting all vet clinics in the area and asking them to take the details, informing local shelters, and even asking the local radio to put a call out for the owners to come forward. After 7 days of real effort to find the owner, the cat is considered adoptable.