Pony Pals

Pony Pals is a 44-book series of pony books written by Jeanne Betancourt and published by Scholastic. It chronicles the adventures of three young girls and their ponies.
The main characters of the series are Lucinda (Lulu) Sanders, Anna Harley, and Pam Crandal. The series starts when Lulu moves to the fictional town of Wiggins, and finds a neglected pony named Snow White, who she boards and later owns (after the fourth book). In the first book she becomes friends with Anna and Pam, who have lived in Wiggins all their lives and already have ponies, named Acorn and Lightning. The three girls call themselves the Pony Pals. The books in the series tend to have the girls find a Pony Pals Problem which they solve together, after each girl writes down a suggestion for the problem and they come up with a solution together at a Pony Pals meeting.
In 2010, a virtual world based on these books, clubponypals.com, was created, where users may adopt a virtual pony.
In other works.
A defaced version of Betancourt's novel "Detective Pony" was featured in the webcomic Homestuck, as a gift given to one of the characters. This inspired an extended fan-edit of the book, which featured extensive re-writing of the story and the inclusion of Betancourt as a self-aware character.