Possible Clues:

• Texter's ''Couldn't finish this article''
• 'Here's a quick summary,' in internet-speak
• Initials before a summary
• Internet shorthand before summing up a wordy post
• 'Sorry, but I'm skipping your novella of an article,' in Internet shorthand
• 'I know this email is super detailed, but here's the important stuff:'
• "I lost interest" acronym spelled out by the starts of four answers in this puzzle
• "Here's the one-sentence version" letters
• Short response to a lengthy online post
• "I lost interest" letters