[axaxs]

Same, but not sure why now that you mention it. I'm a stickler for grammar, oxford commas and all, but in messaging, periods feel...rude at times. I can't explain why, perhaps it is the 'conclusion in thought' aspect.

[gwright]

This discussion is really confusing me. Are people talking about periods being negative when used anywhere? when used in the last sentence in a multi-sentence message? when used at the end of a single sentence/thought message?

Confused.

[Rusky]

I suspect people are talking about periods being negative specifically in IM/text message contexts, like Slack, where "send message" has taken over the role of period and period has morphed into an extra signal for something like "finality."

[axaxs]

For me, only when used on a single short message sentence. Long explanations and paragraphs get punctuated at usual.

I'll also add I'm not the arbiter of what is and isn't correct or wrong, just explaining my own opinion.

[saagarjha]

It really feels abrupt, to be honest.

Mostly because most chat messages are single sentences.

So I guess that people leave them out when they aren't part of a full paragraph of text.

[andreareina]

Many times I've started writing something I intend to be a single sentence so I'll be lax about capitalization. Then I realize a second sentence is warranted so I go back to fix things and carry on. IM really is an odd medium.