If someone is there to misguide , then there is someone else there to guide and correct . There are some members here who critically evaluate the interpretation of Quran and validity and authenticity of ahadees.
Other religion forums out there on the internet are not very secular. They will not entertain anything which will be against their own beliefs.
I think GS provides very secular forum where some debate can be carried out on religious topics.
If someone is provoking hatred against some religion or sect then there are people on GS who defend their position. So in my opinion GS is doing a good service by providing a platform for these kind of religious discussion and debates.