In April 1994 they used a Perl script written by a programmer known only as "Jason", to generate advertisements for their service of enrolling people in a "green card lottery".

This US government program allocates a limited quantity of "green cards" to certain non-citizens, allowing them to stay and work in the country.

[3] This time, Arnt Gulbrandsen put together a software "cancelbot" to trawl Usenet and kill their messages within minutes.

They wrote a book titled How to Make a Fortune on the Information Superhighway: Everyone's Guerrilla Guide to Marketing on the Internet and Other On-line Services (ISBN 0-06-272065-1).

In 1997, Martha Siegel published a revised version titled How to Make a Fortune on the Internet (ISBN 0-06-273466-0) under her name only.