This. (AKA THIS. or This: or THIS:) is type of quotation post similar in meaning to a combined like & repost where the text "This." is stated on a line by itself after the quotation, or the text "This:" is stated before a quotation or URL to express a strong affirmation or agreement with the referenced quotation or article.
Though categorized as a "link" (AKA bookmark) post(s) on his site, at least one such post clearly fits the description / definition of a "This" post:
- 2015-01-19 https://adactio.com/links/8222
The difference between back-enders and front-enders is that the first work in only one environment, while the second have to work with myriad of environments that may hold unpleasant surprises.
Examples of "This" posts on silos:
This: “POSSE is an acronym/abbreviation for Publish (on your) Own Site, Syndicate Elsewhere” http://indiewebcamp.com/POSSE