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Editor's Notes

• #2: Abstract: Web archiving is crucial to ensure that cultural, scientificand social heritage on the web remains accessible and usableover time. A key aspect of the web archiving process is opti-mal data extraction from target websites. This procedure isdifficult for such reasons as, website complexity, plethora ofunderlying technologies and ultimately the open-ended na-ture of the web. The purpose of this work is to establishthe notion of Website Archivability (WA) and to introducethe Credible Live Evaluation of Archive Readiness (CLEAR)method to measureWA for any website. Website Archivabil-ity captures the core aspects of a website crucial in diagnos-ing whether it has the potentiality to be archived with com-pleteness and accuracy. An appreciation of the archivabilityof a web site should provide archivists with a valuable toolwhen assessing the possibilities of archiving material and in-fluence web design professionals to consider the implicationsof their design decisions on the likelihood could be archived.A prototype application, archiveready.com, has been estab-lished to demonstrate the viabiity of the proposed methodfor assessing Website Archivability.
• #4: Web content acquisition is a critical step in the process of web archiving;If the initial Submission Information Package lacks completeness and accuracy for any reason (e.g. missing or invalid web content), the rest of the preservation processes are rendered useless;There is no guarantee that web bots dedicated to retrieving website content can access and retrieve it successfully;Web bots face increasing difficulties in harvesting websites.Efforts to deploy crowdsourced techniques to manage QA provide an indication of how significant the bottleneck is.Dirty data -> useless systemAs websites become more sophisticated and complex, the difficulties that web bots face in harvesting them increase.For instance, some web bots have limited abilities to process GIS les, dynamic web content, or streaming media [16]. Toovercome these obstacles, standards have been developed to make websites more amenable to harvesting by web bots.Two examples are the Sitemaps.xml and Robots.txt protocols. Such protocols are not used universally.
• #5: Website archivability must not be confused with website dependability, the former refers to the ability to archive a website while the latter is a system property that integrates such attributes as reliability, availability, safety, security, survivability and maintainability[1].Support web archivists in decision making, in order to improve the quality of web archives.Expand and optimize the knowledge and practices of web archivists.Standardize the web aggregation practices of web archives, especially QA.Foster good practices in web development, make sites more amenable to harvesting, ingesting, and preserving.Raise awareness among web professionals regarding preservation.
• #7: The concept of CLEAR emerged from our current research in web preservation in the context of the BlogForever project which involves weblog harvesting and archiving. Our work revealed the need for a method to assess website archive readiness in order to support web archiving workflows.
• #21: Already contacted by the following institutionsThe Internet Archive,University of Manchester,Columbia University Libraries,Society of California Archivists General Assembly,Old Dominion University, Virginia, USA,Digital Archivists in Netherlands.
• #22: For instance Metadata breadth and depth might be critical for a particular web archiving research task andtherefore in establishing the archivability score for a particular site the user may which to instantiate this thinking incalculating the overall score. A next step will be to introduce a mechanism to allow the user to weight each Archivability Facet to reflect specific objectives.One way to address these concerns might be to apply an ap-proach similar to normalized discounted cummulative gain(NDCG) in information retrieval49: for example, a user canrank the questions/errors to prioritise them for each facet.The basic archivability score can be adjusted to penalise theoutcome when the website does not meet the higher rankedcriteria. Further experimentation with the tool will lead toa richer understanding of new directions in automation inweb archiving.