My friend is getting married in Feb 08 and there was a card in it asking for money

To save you looking, shopping & buying,
here's an idea we hope you'll like trying
Come to our wedding to wish us both well
and make use of our little wishing well
Just put some money into a card,
now, make a wish...
See, that wasn't so hard!
Now that we have saved you all the fuss
We hope that you will come
and celebrate with us!!!
I think its a great idea, its no different then putting in a gift registry card or asking them to pay for there own meal.