[Margaret Pilkington]

It is only my opinion, but the answer from me would have to be 'no'.
I'm pretty sure that many potential members sit on the sidelines watching the 'flow'.....surely they can make up their minds before they jump in....and the fact that many do jump in and post interesting stuff is a testament to this.
We all know who the 'grumpy burgers' on the site are...it is a bit like a microcosm of real life...you meet people you like a bit, you meet people you like a lot....you meet people you couldn't give a rusty nut for and then there are the rest....you take them in your stride.
Anyone who isn't adult enough to be able to deal with it, needs to live a bit and come back when they feel they have developed enough coping strategies to let any perceived arrows go right over their heads.