if anything, the fact that the site name includes the word "guru" should markedly increase the fos-factor
(nb fos == Full-Of-Shit).
I mean seriously dude, think about it, no real trader will be offering advice or calling trades through a chatroom/website, whatever. WTF should she/he? Too busy making cashola from trading, not from poor gullible plebs.
Conversely, all the tossers will be promising you holy grails.
And be especially skeptical of the wankers who claim to have near 100% win-loss ratios. In hindsight, anyone can pick tops and bottoms. When challenged of course, they will always find some piss-poor excuse to weasel out of a real-time trading challenge, broker statements (and even there we can have serious fudging with multiple accounts), etc, etc, ... The only thing these dudes can pick is their nose.
ResPeKT.