“tl;dr” seems very casual to me. If your readers are casual and you want them to treat your article casually, that may be appropriate.
Incidentally, if acronyming like that, it should read: “Optimization By Proxy (OBP)”
You can probably skip writing the word “Abstract”—if your first paragraph is isolated, in italics, and obviously starts out with a summary.
YES! Readers shouldn’t have to search back to the beginning the first time they see an acronym to figure out what it stands for. The abbreviation should always be explained the first time it is used.
“tl;dr” seems very casual to me. If your readers are casual and you want them to treat your article casually, that may be appropriate.
Incidentally, if acronyming like that, it should read: “Optimization By Proxy (OBP)”
You can probably skip writing the word “Abstract”—if your first paragraph is isolated, in italics, and obviously starts out with a summary.
YES! Readers shouldn’t have to search back to the beginning the first time they see an acronym to figure out what it stands for. The abbreviation should always be explained the first time it is used.