Just on a technical point, could people end up losing serious money to these guys? If you pay £5 for an EU Jet flight, and they go belly up, all you lose is £5 + the tax (unless you are already on the move). But Flyblu are pitching at the other end of the market. If they still impose a credit card handling fee, some will pay by debit card, and might well lose their cash. Or would they have some form of bonding protection?
If they ever go on sale of course.