Guest post by Mozilla Jetpack makes it so easy to filter, modify, and mash up pages that it might end up pitting developers and users against content producers in a battle for the Web, writes Fatal Exception’s Neil McAllister. By allowing users to modify the behavior, presentation, and output of Web apps and pages to their liking, Jetpack brings us one step closer to a more democratic Web. Yet, as Jetpack produces fruit, expect more SaaS providers and media companies to call for ‘guardrails for the Internet.’