A phrase used to indicate that we are not about to justify what we just said with facts. When used excessively, especially in online situations, can lead to much aggravation, with the end result being a head slap to the party or parties overusing this phrase.

a term coined to be used at the end of something insulting or offensive to take the heat off you when you say it.

The punctuation dumb people put at the end of an unsolicited, factless assertion to indicate self satisfaction at having stated something they erroneously believe to be clever, biting, and insightful.

a phrase used to diffuse any ill feelings caused by a preceded remark.

sort of like a mentos.

This term is used after you inject your statement/opinion into a conversation. Generally, this statement/opinion is non-factual, so by saying "just sayin'", you are clarifying that this statement/opinion is unprovable and it is just a thought off the top of your head.

During an IM conversation, this term can be abbreviated with "JS".

This often rage-inducing saying is typically preceded by a blatantly honest statement that's likely to insult at least one person with it's cold, bitter truth. Frequent usage of this saying can spread it's use like a highly aggressive plague, eventually saturating almost all conversations, particularly on the Internet where anonymity encourages impolite truths.

Pointing out some information or fact without stating any particular opinion about it, leaving the other person to form their own opinion based on what you've said. The equivalent of the old phrase, "I am just giving information here."

“Just saying” or Just Sayin” in the Midwest is used as a tag on the end of a thought almost always used for comedic effect. Sometimes it is used to indicate you expressed something that should be obvious to everyone but most people are too intimidated or uncomfortable to say out loud (like the elephant in the room metaphor). Depending on context it can also mean “seems obvious to me but it’s obviously just my personal opinion.” Occasionally it is tagged on the end of a sentence to indicate your previously expressed thought or opinion was just a quick first impression or “off the top of my head” response. Context is everything to understand the correct meaning.

In my experience it can be applied equally to a compliment, a criticism and/or as an effective form of sarcasm. Most online definitions for it’s use completely missed the functional meaning of the phrase stating it was used “to claim something as fact without evidence”. Some claimed it was to “soften criticism or defer provoking anger from someone”. The worst was from people claiming it was used by “people with no balls to say something controversial or potentially offensive but to accept no responsibility for saying it.” Another misinterpretation Claimed the user knew their statement was false but were unwilling to acknowledge or respond to any facts proving otherwise”. Personally I have never once heard the phrase used as described in this paragraph.

Telling someone some home truths about something and dont want to get into trouble?

Just finish the line with "....Just sayin" as if you are just pointing out the obvious that others wouldn't say.