Are Paid to Click Sites a Recipe for Repetetive Strain Injury?

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I joined one, it isn't going to badly, but I have a worry. If you repeatedly repeat the same action, then you put a strain on the same muscles. To click repeatedly on adverts you are doing that. In the early days of the Internet I played a game called "Squeak" where you shot vegetables. I found it a great stress reliever till my children hid it saying I was addicted and I also ended up at the hospital with RSI. Of course, I was repeatedly using the same muscles. Should those paid to click sites carry a warning?