Hi,
The whole sentence was a joke. One of the mods (sorry, can't remember who ... MrP?) was basically saying that instead of money or presents, they get loads of mistakes for Christmas.
Here are two good pages for comma splices and dangling modifiers .
Here are two examples:
- comma splice: "Italy is well known for its monuments, there are amazing churches in Rome" (two independent clauses separated by a comma).
- dangling modifier: "Being in a dilapidated condition, I was able to buy the house very cheap." (this example is not mine
! who is in dilapidated conditions? the house or I?)