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Skimr is the least like a traditional RSS feed of all the cloud-based options in this list. Rather than display content in a main panel with a list of subscriptions down the side of the page, Skimr presents the chosen 'skims' (an individual subscription) or a list of all skims (all subscriptions).
New sites can be added by URL, browsing Skimr's directory, or by uploading a previously exported OPML (Outline Processor Markup Language) file.
It may be little surprise to learn that as Skimr looks more like a mobile-optimised site than a desktop site, there are no native apps for the service, but it will work happily in most mobile browsers.