Why on betfair do they put trotting in horse racing category?

They are horses and they are racing, tbf.

Well would not say they race fully as they trot.If they race they get disqualified.

Possibly to attract people to bet on it?

Paul, how were you caught out?
Unless you were just betting blind or chasing?
The jockey sitting on a sulky rather than the horse's back should have been a clue

You need your heads examined if you been betting on that stuff, down under its known Cheats In Seats

Correction:

or that might be Harness Racing

No it was not until I seen trotting when I looked through the cards on horse racing it was there but never had a bet but could of caught me out.As somebody has already said harness racing it did say trotting.I never chase losses as tomorrow is another day.Having plenty of success ion bit coins when trading.

stewyb's the man to ask.

Well done Paul, no harm meant, just a bit of mickey taking

Am I right in thinking bitcoins were about 10p around 2010?
Now 30 grand or something?

The thing that worries me is that I'm not too computer savvy and fear I'd get them stolen online... Or can you now trade in them without physically holding them?

Reg butler I have only been doing it a month and took a bit to set it up.In a 30 minute session I can make anything between £100 to£500.You only normally only trade between 17.00 to 18-30 as a guide and you have a wallet you transfer money from but I have never needed to as I started with £500.Some are trading and it is usd 500 and 1000 on every trade but am not up there yet.

So, no worries about actually physically holding bitcoin
You're just trading on price movements like share dealing?
If you're making 100-500 a day in a 90 minute window, then keep going and don't worry about trotting or any other horse racing racing, would be my advice
If you've found an edge/angle, just keep going
Well done

Special subject the bleedin' obvious here OP YFSC, but if it involves horses, and they're racing, then it is, er, horse racing.

Very popular and very well-attended in my native Australia.  I remember many great nights at Harold Park in Sydney when they had harness racing, the "trots" as we referred to it, on a Friday night.

In the UK a lot of people get the trots on the Saturday morning after.