The definition for "ProTip" in Urban Dictionary states:
n. to distill important knowledge about a subject and share it with those new to said subject.
often used in internet forums to criticize new members if they break the forum rules.
The second line confuses me.
This sounds a bit "offensive", but the term seems pretty much commonly used in a programming context; e.g. the Jekyll's documentation, to point out useful bits of knowledge for newbies (apparently even those who do NOT "break the rules").
So, can the term be safely used to point something out for newbies non-offensively?