I am a bit surprised to find my pics here BTW.
Please think of the use of your pictures as a compliment.
Yes, they should have given you a photo credit.
But, their intent was pure and they did so with no chance of
profiting monetarily from the pictures.
Think how you would feel if you found your photos used on sites
to promote sales without permission or credit.
That has happened to many a photographer here and even caused
Rob Vreeland to change his subject matter from kites to pets. A great
loss to kiting. He took excellent photos, used in magazine ads and internet
store sites with no remuneration offered or permission asked.