Really Important Message For Admin
There is some serious problem with vanilla forums structure I have read in one of the blog of Google that if your website structure is bad then google bot get confused and doesn't index the page.
So if you look at the vanilla forums structure.
The URL structure is like this:
If you see above then you will notice that for each new discussion vanilla forums create new directory like /1/, /10/, /50/, /100/
this is really bad seo practice it's same as creating 1 subdomain for 1 post.
Eg - subdomain1.example.com/hello/
This is the main reason behind the indexing issue of vanilla forums.
Admin - Please fix this and make the URL structure as simple as possible. Put all the new discussion under the 1 directory
With current vanilla URL structure google will take 1-3 months to index a single discussion because google treat each new directory/subdomain Differently