MarkGI meant posts by others that they boost. However, it seems that I'm no longer seeing these. I'm not sure why it wasn't working initially, but fortunately now it is working.
It may have been due to the addon uMatrix, which I've since deactivated in favour of Privacy Badger (on Firefox). But, anyway, it is now working.
All ０７６萌ＳＮＳ content and data are available under the