I think the "friendliness" of a site totally depends on the people who use it being tolerant of ALL views expressed, and relies on any responses posted to a persons point of view being relevant and not just mean-spirited or plain nasty. I always fail to see the point in a person posting just to slate someones point of view by being personal, as to me it is unnecessary.
We all have one thing in common, and that is a love of the area, but should that mean we are not allowed to post anything negative? No. Yes, promote an area, but in a balanced way. LG, like anywhere else in the World, does have a downside.
Also, much as I love Tenerife in general, I would not say anywhere on the Island is a cut above other places around the World!! The whole place is a tad too touristy around the coast, if that makes sense? Same is happening in Turkey, Greece etc. and it's a shame that places feel the need to become "identikit" Brit magnets to attract people. But I suppose that is the problem, many do not feel comfortable unless they are surrounded by UK culture, so only seek out resorts that provide this.