often used in internet forums to criticize new members if they break the forum rules.
Experienced member: protip: this forum is ALL male.
Likely taken from GamePro magazine, which used the term as early as 1989 in conjunction with screengrabs of video to capture reader's attention to offer advice on completing video games and tying the term into the publication's title.
Protips are generally tips designed to help an individual with a task, by describing how to make it easier, ways to cut corners without damaging the final product, and little tricks that have been found to do the task or make it easier/better.
Protips are also confused with/share common idea with life hacks. Don't be confused, life hacks are for life; and Protips are for everything you do in your life.
Found quite commonly on Infographics or 4chan.
This can often be related to video games.
Mortane: dude your K/D is terrible, if you keep dying get some more HP
honrockzers87: ... I would if I could save up some gold...
Walroz: lol Mortane, pro tip!