I think there are no sources that are never biased. Every scientific or philosophical source therefor and for that reason uses "reference frames" which makes their statements valid under certain circumstances (the references) only. Anything else is hogwash and telltales. I see that often here. But - we also discuss personal opinions - so we take telltales and hogwash as opposed to scientific references. I prefer whatsoever kind of source and link rather than "I heard someone say this and i am using his/her opinion unquestioned". Only dogmatic religions are valid universal (or telltale beliefs that is). Evrything else is always biased.
Wikipedia is not used as a good source for writing scientific articles because anyone can edit it and write stuff to it, and it will not be crossread or evaluated, which usually scientific ressource does.
You can`t quote wiki in your thesis without getting ridiculed by your professor but i think for eccie its fine. We are not making science here. So i`d consider wiki a good quote for finding further information. Its a nice invention. Shall we uncritically believe it. Of course not.
I think for here it depends what we want to discuss. If an article is for discussion we should link it (and not just quote it without stating the source - this is copyright problem, i have seen it happening here too) and discuss the article. If personal opinions are for discussion we should all discuss personal opinions. The difference is how you say it. "I believe/think/have experienced" vs. "It is a fact that.." If you state your personal opinion as subjective its ok too.
And in the end we are anyway just all trying to get laid, right??
All this foreplay.....wow......