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"[Versionista] provides both an accurate date of the last change and reveals the edits that have been made between versions of the site - highlighting what has been added and removed in side-by-side comparisons."
-- ReadWriteWeb at The New York Times
"[T]ools like Versionista are making it easier still to spot alteration over time." -- The Economist
"Versionista helps to promote accountability" -- ars technica
[See more press about Versionista at Wired, CNET, and Slate.com.]
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Versionista monitors Web sites that you specify for edits. Our Web-based service records every change,
clearly highlighting added or deleted words and sentences.
You can view multiple generations of edit histories for every page on a site. At the same
time, filtering eliminates information overload by tracking only content that matters.

Versionista was designed by PhDs for the rough-and-tumble world of today's Web.
- Every site edit, version, and deletion is "set in stone" by Versionista on an hour-by-hour basis.
- Precise historical mapping of a Web site's edits, including "scrubbing" of potentially
compromising information, is a competitive advantage to journalists, campaigns,
corporations, legal professionals, and activists.
- Integrate Versionista with your own site to provide viewers complete edit transparency to your pages, automatically displaying last revision time and letting users interactively explore exactly what has changed.
- Versionista gives a "big picture" visualization of the evolution of a site, particularly one that has multiple editors, bloggers,
or outside contributors.

A side-by-side comparison and multiple other views let you see "before and after" versions of every monitored page. We highlight what
text has been added, deleted, or moved. Versionista will keep up to 25+ versions per page. You can "rollback" in time to see older
versions.
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(RSS feed.)
February 19th, 2009 ProPublica uses Versionista to highlight changes to WhiteHouse.gov
We’re excited that ProPublica, a non-profit investigative journalism newsroom, has released ChangeTracker, which lets visitors view the most recent changes to WhiteHouse.gov (and several other government sites). This service uses Versionista as a back-end. You can even “steal their code” to create your own custom RSS and other alert systems using Yahoo Pipes and Versionista.
Update: They already found a pretty interesting edit!

January 23rd, 2009 Versionista Launches Integrated Web Versioning; New Feature Lets Webmasters Offer Interactive Archive of All Site Pages to End-users
Today, Versionista is pleased to release a powerful new feature that allows Webmasters to easily include automated revision history into their site.
Once activated, Versionista’s integrated Web versioning automatically includes a “last revised” timestamp on every monitored page. A click on the timestamp allows visitors to interactively explore archives of previous versions, visually noting the exact words and sentences that have been added or deleted from edit to edit.
With an ever-growing demand for greater transparency, accountability, and enhanced disclosure, Versionista’s integrated Web versioning affords Web sites the ability to comprehensively engage with visitors. A public archive of any Web page’s previous versions lets visitors note changes since their last visit, and get a better sense of both the frequency and relevance of ongoing edits.
Read more…

November 3rd, 2008 We just wrote a summary of interesting edits to the Obama and McCain sites. Find it here.

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