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This plugin implements an widget which can show a different, page controled, rss feed. What I wanted was the last x plugin reviews on the page
with the plugin info.
For this I added an extra field to every page in which an plugin related id can be stored. This id then will be used by the widget to
replace the @ID@ marker in the rss feed.
When the page rss id is empty, there’s also a default title and rss feed to use.
The defaults are for use with the plugins. But.. You can also change the rss feed in the widget settings to only @ID@ and add a
complete feed url to every page resulting in a complete different feed on every page.
I use this widget together WooSidebars (https://wordpress.org/plugins/woosidebars/) so I can easy controle where the widget ends up..