Hi Lara
One way to make newcomers feel part of the community is to give them help to learn how to navigate the site, how to post, how to start a new thread, where the list of topics are (and thence the threads under each topic) , what to do if they find a post offensive or spammy, how to send a private message to another poster, where to find the meanings of acronyms and why posters can choose to use them (or not) and all the other practical details involved in being an active member of Gransnet.
Posters are often unused to online social networks, and frequently ask in the course of a conversation about all these things and more. Even for those who have used Facebook and so on, finding their way around the site is like being stranded in a strange town with no street map.
Could there be a page with a comprehensive tutorial (interactive with screenshots) to navigating and using the site, and could every new poster be welcomed with a PM containing a link to that tutorial? If anyone asks on the forum, seasoned posters could also direct them to it, and not have to reinvent the wheel by repeating "how-to-do-it" to each newby separately.