• [I'm so funny!]
• [What you just typed was very amusing]
• 'That's funny,' in a txt msg
• 2 funny!
• Cavalleria temptress
• Ha ha ha! online
• Ha ha ha on a PC
• Ha ha, in a chat room
• Ha ha! in chat rooms
• Ha ha! on the Internet
• Ha-ha, in e-mail
• Ha-ha, on-line
• Ha!, in chat
• Ha! online
• Hilarious, to texters
• I literally spit all over my keyboard, in short
• I'm giggling audibly, in e-mail
• I'm laughing audibly, in e-mail
• IMHO, that's hilarious
• LMAO alternative
• OMG ur so funny!
• OMG, that's sooo funny!
• OMG, too funny!
• That link was hilarious
• That's a riot!, in chat rooms
• That's funny, lazerpwned1983!
• That's funny, screenname123!
• That's funny, in chat rooms
• That's funny, in e-speak
• That's funny!, in an e-mail
• That's funny!
• That's funny! on the message boards
• That's funny!, in a chat room
• That's hilarious, when texting
• That's hilarious! in chat rooms
• That's hilarious! in cyberspeak
• That's too funny! in netspeak
• This cat picture you IM'd me is hilarious!
• U crack me up!
• U r a clown!
• u r fun-e
• U R funny!
• u r so funny
• UR 2 funny equiv.
• Very funny!, online
• Very funny! to Internet users
• You're killing me, in texts
• You're killing me, textually
• Abbr. near a smiley
• Abbreviated yuk
• AIM giggle
• AIM twitter
• Alternative to a smiley face emoticon
• AOL guffaw
• AOLer's chuckle
• Bit of high-tech amusement
• Bit of Internet mirth
• Chat chuckle
• Chat room That's a riot!
• Chat room abbr.
• Chat room acronym
• Chat room chortle
• Chat room chuckle
• Chat room chuckle (abbr.)
• Chat room chuckle, for short
• Chat room guffaw
• Chat room joke response
• Chat room laugh
• Chat room letter
• Chat room props
• Chat-room ha-ha
• Chat-room laughter letters
• Chatroom chortling
• Chatroom chuckle letters
• Chatroom chuckling
• Chuckle in a chat room
• Chuckle in an e-mail
• Computer expression
• Creme of 10cc
• Cyber-chortle
• Cyber-chuckle
• Cyber-chuckle hidden in this puzzle's theme entries
• Cyber-guffaw
• Cyber-yuk
• Cyberchuckle, and a hint to this puzzle's four longest answers
• Cyberroar
• Cybersnicker
• Cyberspace Ha-ha!
• Cyberspace chuckle
• Cyberspace guffaw
• Cyberspace snicker
• E-chortle
• E-chuckle
• E-guffaw
• E-mail cackle
• E-mail guffaw
• E-mail outburst
• E-roar
• Electronic gag reflex?
• Emoticon alternative
• Equivalent of ur 2 funny
• Facebook chuckle
• Follower of a chat room joke
• Funny-text reaction
• Giggle or guffaw, online
• Guffaw, in internet-speak
• Guffawing, in Internet lingo
• Ha ha, online
• Ha-ha, nowadays
• Hi-tech guffaw
• Hi-tech titter
• How an on-line chatter says That's funny!
• I.M. snicker
• IM Ha-ha!
• IM chuckle
• IM delight
• IM guffaw
• IMer's How funny!
• IMer's chuckle
• Internet chuckle
• Internet giggle
• Internet guffaw
• Internet laugh (abbr.)
• Internet lingo abbr.,this puzzle's theme
• Internet snicker
• Joke follower
• Joke response
• Keyed-in chuckle
• Letters to an on-line jokester
• Modern indicator of amusement
• Modern joke response
• More than te-hee, online
• Not quite ROTFL
• Not quite ROTFLMAO
• On-line cachinnation
• On-line chortle
• On-line chuckle
• On-line guffaw
• Online 'Ha ha'
• Online Ha!
• Online Oh, too funny!
• Online That's funny!
• Online display of amusement
• Online haw-haw
• Online hilarity
• Online joke response
• Online laugh
• Online prefix for cat
• Online shorthand in reply to a joke
• Online snickering
• Online yuk
• Part of many an AIM chat
• Possible reaction to a n00b
• Reaction not as strong as ROFL
• Reaction to ZOMG
• Reply to a funny IM, maybe
• Response to a funny text
• Response to a funny YouTube link, say
• Response to a joke in an I.M.
• Response to a joke on-line
• Response to an e-mail wisecrack
• Response to an e-mailed joke, maybe
• Response to an IM'ed joke
• Response to an on-line joke
• ROFL alternative
• ROFLMAO, but milder
• rotf, perhaps
• SMS interjection
• Text message guffaw
• Text te-hee
• Texter's chuckle
• Texter's guffaw
• Texter's roar
• Texter's tee-hee
• Texter's titter
• Texting guffaw
• Tickled texter's comment
• Tickled texter's titter
• Tickled user's response
• Titter in a tweet
• Twitter titter
• Type of amusement?
• Ubiquitous online initialism
• What might be sent to a card on the computer?
• Wisecrack response, in modern shorthand
• Yukking it up in cyberspace