You could also email other email vendors and ask them to revise their licensing to this admirable standard. This is a noble effort, but I suspect most spammers don't care. The supply or promotion of Pegasus Mail for the purpose of sending bulk, unsolicited e-mail is incompatible with the basic aims of the program, which revolve around the free provision of a service that enhances the quality of peoples' communication. If a product being advertised is illegal, or fraud seems obvious, consider contacting legal agents. This could get both the advertiser and spammer in trouble.
Many web sites request a name and email address to register for their services.
At best you'll get email from the web site, which you might even want. At worst the site will sell your name, email address, and any demographic information you provide to junk email vendors. Be prepared to get spam for funeral homes. Spammers use robots to scarf up email addresses from newsgroups. Many newsgroup posters disguise their email address by inserting underscores or other characters.