How long do archived Physics Forums threads stay accessible?

[Defennder]

How long are threads in PF archived for? I'm subscribed to a number of really good ones but which date back to two years and older.

 

[Greg Bernhardt]

Threads are kept "forever".

 

[Defennder]

All threads? How about those in GD?

 

[Evo]

All threads? How about those in GD?

A lot of old threads are being closed as they do not meet current guidelines.

 

[Defennder]

Closed? As in locked? Or deleted?