This isn't a fix but it will help circumvent the whole 'leave-site' issue that some may be experiencing. Try "tabbed browsing"
Mobile device users:
On the main threads page, tap-and-hold on each thread title. Then, from the popup menu, select "open link in new browser tab" (or words to that effect).
You'll find that 90% of the opened links will work fine but, every now & then, one of them will auto-forward to you these nonsense links. You can close that "tab" & just re-open the same message from the main threads page (which you have open in another "tab").
PC users:
Just press "Crtl", then click the link & it'll open in a new "tab".
As others have said, it doesn't look like this auto-forwarding issue has permeated as far as the desktop site ads just yet.
Overall benefits
- You don't have to forward-back button your way around, just open the pages in 2 or more tabs & flick between them. Don't forget to close them when done.
- Useful if searching for something on Google/Amazon/Ebay etc & you want to compare websites/products on-screen (without the forward-back button reloading etc). You can have everything open at once & just jump between pre-loaded pages.
- Cheaper on mobile user bandwidth ie: you don't repeat-load the same page several times as you would with the forward-back approach. Less content being downloaded = less cost (or more browsing capacity)
Appreciate that may be teaching some users to suck eggs but might prove useful for others
HTH