Adding data & invite refusals

I am wondering how best to use the website, which is the best place to add our own research and queries, in the Forum, Blogs and the Discussion section? or the Comment section? It would be lovely to all keep to the same format to make reading easier.

Also I have noticed that some Groups are hiding away and you have to be invited to join, surely this defeats the whole ethos of this set up.

Sad to note that many folk are running away from the Facebook "like" description of the site, they want nothing to do with, even when I say what it will do!!!