It seems people will get credit regardless their solutions are right or wrong, because I am totally frustrated when I see the answers they give are wrong. I will give my solutions despite it will set me back 100 points. My question is will I still be credited even I am not the first one who posts the so-called solution, and more importantly, why people are allowed to post wrong solutions? I thought slader have people to verify the solutions are legit or not.
Slader is a crowdsourced resource for homework solutions. Just like on Wikipedia, the quality of the solutions will increase as more solutions are added to a particular exercise. The community is responsible for maintaining the quality of solutions, which is why we allow users to vote up solutions, flag solutions, and add multiple solutions to an exercise.
We have moderators who check that solutions are complete enough to go live. Due to the high volume of exercises we moderate every day, we cannot check the math on every problem. (Dylan moderates almost 5000 solutions every day, if that gives you an idea.) We do check to make sure that solutions are complete, the LaTeX renders, and no solution contains spam or inappropriate content.
Every time you flag an incorrect solution, you receive points. If you add a new solution to an exercise and it is voted above the previous solution, then you will receive all royalties generated by solution views.