"I've Got a Secret" was more informal than its sister show "What's My Line?". The panel and host used each other's first names. As noted, the time limit on questioning was removed early in the show', and time limits were set more for entertainment. The men on the panel always wore normal suits or even sport jackets, though both Morgan and Moore sometimes chose bow ties over straight ties. Until the later years of the series, both Moore, and members of the panel smoked cigarettes on the air. The panel was introduced at the start of each episode by the host, usually with a pun on their names.