Yup.
Back when I worked at the office, I posted on DIS all the time. My boss didn't care as long as my work got done, and it always did (and does). While we've been told our usage can be officially monitored, they currently don't and won't as long as the higher ups feel it's not being abused.
Now I work from home FT and still post on the DIS, but I use my home computer, not my work laptop. Boss still doesn't care as long as my work gets done.