entries[i].id

A globally unique identifier for this entry.

If this is a relative URI, it is resolved according to a set of rules.

Comes from

• /atom03:feed/atom03:entry/atom03:id
• /atom10:feed/atom10:entry/atom10:id
• /rdf:RDF/rdf:item/@rdf:about
• /rss/channel/item/guid