The school newsletter usually has a few typos, but this week the head teacher's letter had about 8 comma splices. I winced every time. Seems especially bad as the school is focusing so much on grammar...
Examples are
We love learning in our school, this week I was delighted to see x and y...
I hope you enjoyed the Xmas service, many thanks to the vicar...
Thank you for all your cards and Christmas gifts, we do appreciate them...
Argh!