BUG: Safari BMJ citation drags in other elements
When using Safari to add a citation for a BMJ article (http://blogs.bmj.com/bmj/2017/07/18/social-prescribing-offers-huge-potential-but-requires-a-nuanced-evidence-base/) Zotero added other elements to the collection. Some were blank elements with attached links, which look like they were drawn from the web page. Others were named: "Disqus Comments", "Disqus Realtime Notification", "Facebook Cross-Domain Messaging helper". It also added the citation correctly.
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Blog posts and online-only letters that do not have DOIs import as a webpage but sometimes with crazy metadata. When I look at the header for embedded metadata for these blog posts there seems to be all sorts of random stuff within the regular tags. The "stuff" can include snippets from various parts of the text on the page, text from what is displayed behind images, mouse-over text, text from the footer that is repeated several times, etc.