Popular gigs are selling out as soon as tickets go on sale. And that's forcing some fans to go to agents who charge far more than the face value of the tickets.
Now, the Department of Trade and Industry has received so many complaints about one ticket agency - Getmetickets.net - that they're going to the High Court to get it wound up.
We also want to hear your experiences of buying tickets online, whether good or bad. Andrea paid �318 for three tickets to see boy band Busted from Getmetickets.net. At �106 each, she thought they were for the front row.
In fact the tickets had a �14 face value, and there was no front row because the concert was in a park.
Andrea, and her husband and son, who was seven at the time, were forced to stand at the back of the venue and hardly saw any of the concert.
In a separate case, which doesn't involve the company Andrea used, Sir Cliff Richard complained - to the BBC's Watchdog programme when tickets showed up on the web for nearly �400 when the face value is only �45.
Sir Cliff was outraged that his fans were in some cases being offered tickets the agents did not even have.
The problem has been made worse by punters - as well as touts, buying up tickets and selling them through online auction sites.
The veteran singer said the practice betrayed his fans' loyalty.
"People are prepared to save up and buy tickets for my concerts. I don't think it's fair on them when they're showing such good grace and such loyalty."