I recently tried to arrange travel through Seat24.
After booking online, I got a confirmation and an e-ticket in the email. Mission acommplished, I went to sleep.
Sometime during the night, I received an email from eTRAVELi saying that they needed additional photo identification faxed to them within 12 hours to confirm my identity or have the trip cancelled. Of course, that email came after I went to bed, so I didn't see that email until later the next morning, more than 12 hours after my booking. Also, I had no idea that eTRAVELi was associated with Seat24, so I thought it was fraud. I called Seat24 during their extremely limited hours (9-11, 12-2), and was on hold for 42 minutes before I got a human. The person informed me that Seat24 is one of many names that eTRAVELi uses. I was also informed that since it was more than 12 hours, they cancelled my trip.
I did not see anything on their website requiring additional photo identification, nor the eTRAVELi and other names.
I'd like to warn people to stay away from Seat24 and eTRAVELi.