Originally Posted by Misstreez
Yes, put an insert inside the card so people can write on it.
I normally only feel I need to put an insert in if my card base is darker than kraft. If it's white or kraft I reckon an ordinary pen or biro will be fine for writing in it.
Of course sometimes I might add one just to dress the inside up a little with some more stamping, but time doesn't often allow for that these days.