Do you report others? How often and what for?

As the title suggests, when would you report a summoner on what you consider being reportable. Do you report when the enemy team/ally team says in all chat "_report this inting Janna 0/5_" or do you ignore what people complain and say in all chat? Let me know some examples of what you consider reportable. I've just come of solo/duo queue and I'm pretty peeved at every game I've played as I've had to report a team member or many due to toxicity etc. Finally, how often do you use the report button? Do you even bother reporting people or do you brush it off thinking its going to have no 'impact/effect'? Would love to hear from you guys!
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