You're right for online conversations or around people you don't know. Within friends groups or people that know you well (long-time coworkers) it's an effectiv

You're right for online conversations or around people you don't know. Within friends groups or people that know you well (long-time coworkers) it's an effective tool, at least in my experience. The hard part is not getting taken out of context by someone that overhears your conversations, so you should still exercise caution.