Thank you for this! I quite often see people use "trolling" in articles where I would use "trawling" and I knew they couldn't all just be mistaking their words, it's a relief to know that "trolling" is also a fishing term.Both work in that sense, interestingly enough; trolling is trawling with a baited line instead of a net. (That's actually one of the potential origins for the getting-people-mad-on-the-internet sense, in fact.)