Ok. Because you can only 'staple' features to site definitions which will be provisioned in the future, you need a way to activate new features on existing sites.
So, the fix I discovered and used follows:
The default page for the newsfeed is http://site:80/default.aspx
. If you create an event receiver and scope it for 'site' and deploy it globally or to that web application, then it will work on the base site collection. Each personal site is a site collection and has the feature but it needs to be activated on each personal site collection.
So, in the default.aspx page, you place the following which will activate the feature if it has not yet been activated.
<script runat="server" type="text/c#">
protected override void OnLoad(EventArgs e) {
base.OnLoad(e);
String sAccount = (((SPWeb)((SPSite)SPContext.Current.Site).OpenWeb()).CurrentUser.LoginName).Split('\\')[1];
String basePersonalURL = "http://site:80/personal/";
String eventReceiverFeatureId = "12345678-1234-1234-1234-1234567890ab";
using(SPSite site = new SPSite(basePersonalURL + sAccount)) {
site.AllowUnsafeUpdates = true;
using(SPWeb web = site.RootWeb) {
web.AllowUnsafeUpdates = true;
try { site.Features.Add(new Guid(eventReceiverFeatureId)); } catch {}
web.AllowUnsafeUpdates = false;
}
site.AllowUnsafeUpdates = false;
}
}
</script>
You also need to edit the web.config file in order to allow inline code to run for this page. Hope this helps.