This site features a service that sends you a new pun via e-mail each day. It also contains a bookstore, a pun search, laugh links, and an option to submit your own puns. There are some bad jokes but that's why they are funny!
Top Pun has puns on serious social action with playful irreverence. You can sign-up email notices of their latest puns and products. Pun examples: The pun is mightier than the sword. Justice is no yoke!