[from SF fandom via Usenet; abbreviation for
`In My Humble Opinion'] "IMHO, mixed-case C names should be
avoided, as mistyping something in the wrong case can cause
hard-to-detect errors -- and they look too Pascalish anyhow."
Also seen in variant forms such as IMNSHO (In My Not-So-Humble
Opinion) and IMAO (In My Arrogant Opinion).