Don't be surprised if somebody hands you a completely blank business card. They probably work for a 'stealth company' that keeps its activities secret from almost everybody. Armed with a new technology that expands the utility of e-mail, dot.com start-up Zaplets feared potential copycats, so it went 'into stealth'. The name, which might have made web-watchers inquisitive, was changed to the meaningless FireDrop. Job applicants had no idea of FireDrop's purpose - only that it was internet-linked - until they signed a tough non-disclosure agreement on hiring. FireDrop even deliberately took new offices that weren't on any map. Oddly enough, it had a web site. But don't worry; that contained no contact or other useful information - just like those of some major UK companies. Are they in stealth too?