Possible Clues:

• Bit of chat room shorthand
• Texter's 'Seems to me...'
• "Editorially speaking," in e-mail
• "All I'm saying is . . ." online
• Preface online
• Polite "I think," in chat rooms
• Respectful txt msg
• Internet commenter's initialism
• 'If you ask me,' in a chat room
• Chat room "I'm just saying ..."