I
- I didn’t change anything!
- I see no X here.
- I for one welcome our new X overlords
- IANAL
- IBM
- ICBM address
- ice
- ID10T error
- idempotent
- IDP
- If you want X, you know where to find it.
- ifdef out
- IIRC
- ill-behaved
- IMHO
- Imminent Death Of The Net Predicted!
- in the extreme
- incantation
- include
- include war
- indent style
- Indent-o-Meter
- index of X
- infant mortality
- infinite
- infinite loop
- Infinite-Monkey Theorem
- infinity
- inflate
- Infocom
- initgame
- insanely great
- installfest
- INTERCAL
- InterCaps
- interesting
- Internet
- Internet Death Penalty
- Internet Exploder
- Internet Exploiter
- interrupt
- interrupts locked out
- intertwingled
- intro
- IRC
- iron
- Iron Age
- iron box
- ironmonger
- ISO standard cup of tea
- ISP
- Itanic
- ITS
- IWBNI
- IYFEG