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¡¡¡¡3£©Outdated copyright date or last modified date visible on the pages.
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¡¡¡¡4£©error pages that don't send 404 headers or send content regardless of the page requested/querystring entered.
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¡¡¡¡5£©Massive numbers of incoming links from link farms.
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¡¡¡¡6£©dead/404ing links.
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¡¡¡¡8£©No published contact address, email address or phone number.
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¡¡¡¡9£©A high bounce rate (surfers clicking back on their browser and selecting another search result).
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¡¡¡¡11£©Whois info for the domain which is the same as other domains previously penalized or banned. (Could also be true of adsense publisher/affiliate ID's and other identifiable footprints)
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¡¡¡¡16£© A high percentage of affiliate links vs regular outbound links.
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¡¡¡¡17£© No / very few outbound links.
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¡¡¡¡18£© No / very few inbound links.
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¡¡¡¡19£© All inbound links are to homepage only
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¡¡¡¡20£© Outbound links to questionable/spammy/crap sites.
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¡¡¡¡21£© Profanity or explicitly adult language on a non-adult site.
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¡¡¡¡22£© Too many spelling errors.
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¡¡¡¡23£© Contains unrelated subjects (ex: a site that reviews toys and tries to sell insurance or viagra).
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¡¡¡¡24£© Lack of interest from social bookmarking sites.
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¡¡¡¡25£© MySQL or PHP errors in the pages
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