targeted approach was a good business model. Writer T Campbell described JD Frazer's work as "ow[ing] a heavy debt to [Scott] Adams, but his 'nerdcore' was a purer sort: the jokes were often for nerds ONLY-- NO NON-TECHIES ALLOWD." He continued "He wasn't the first webtoonist to target his audience so precisely, but he was the first to do it on a daily schedule, and that kind of single-minded dedication is something most techies could appreciate. User Friendly set the tone for nerdcore strips to follow." Comic writer and artist Joe Zabel said that User Friendly "may be one of the earliest webcomics manifestation of the use of templates... renderings of the characters that are cut and pasted directly into the comic strip... I think the main significance of User Friendly is that in 1997 it was really, really crude in every respect. Horrible artwork, terrible storyline, zilch characterization, and extremely dull, obvious jokes. And yet it was a smash hit! I think this demonstrates that the public will embrace just about anything if it's free and the circumstances are right. And it indicates that new internet users of the time were really hungry, downright starving, for entertainment.... his current work [speaking in 2005] is comparatively slick and professional. But I suspect that his early work had enormous influence, because it encouraged thousands of people with few skills and little talent to jump into the webcomics field." Zabel also credited User Friendly's success in part to its "series mascot", Dust Bunny, saying that "the popular gag-a-day cartoons almost always have some kind of mascot." The webcomic Penny Arcade produced a strip in 1999 just to criticise Frazer, saying "people will pass up steak once a week for crap every day." By contrast, Mashable included it in a 2009 list of the 20 best webcomics. In 2007, User Friendly was part of an exhibit at The Museum of Comic and Cartoon Art called Infinite Canvas: The Art of Webcomics. April Fools' Day prank and other appearances On April Fools' Day 1999, the site appeared to be shut down permanently after a third party sued. In future years, the April 1st cartoon referenced back to the disruption that was caused. A person who said they assisted Frazer in the pranked posted on Reddit, several readers considered the prank unacceptable. In late 1999, User Friendly and Sluggy Freelance swapped a character (A.J. and