The Certificate of Irish Heritage is offering a free (unframed) certificate to the winner of a competition it's running on Facebook.
It's a painless enough exercise if you've got a Facebook account. Go to the entry form, click the 'like' button up the top, enter your details, and you're in with a chance. Well, you are in with a chance if you submit your entry on or before 31 May.
The rules say only one entry per person, but if you share it with friends, you received a bonus entry if they also enter.