This probably applies more to classified ads outside ebay, but people should be aware:
I wanted to warn poeple about a scam that I presume is very widespread.
I was searching in classified adds on line for a puppy, and I started to realise that most of the phone numbers shown start 070. Those that don't display a phone number will send you their phone number when asked. And guess what.........they are 070 numbers.
For those who don't know 070 numbers are premium rate
The first number I rang (without even spotting it was 070) just rang and rang, but I did notice it was an unusual ring. This is probably because the phone is answered immediately, but then plays a recording of the ring tone, so that you stay on the phone for longer.
PLEASE STATE IF YOU FIND THIS GUIDE HELPFUL