I haven't seen Turbo's posts in a while, either... and I *KNOW* that I've clicked the NOT SPAM filter on any NUMBER of people on this Forum!
For some reason, GMail itself doesn't seem to like users that have GMail addresses, warning "This user may not have sent this message"... but still letting the message through. I always click the "Never Send to SPAM" option in the "create a filter"... but it ALWAYS keeps flagging people with GMail accounts. :/ It's annoying, but I am still getting those messages.
Still not seeing "Turbo", tho. :/
Now, GMail has changed to an exceedingly "cutesy" interface, which DEVOURS CPU resources on this older (but fully functional/useful machine) so I switched back to the "Classic" interface, which bogs down a lot less. I tried their "Plain HTML" interface, but it's brutally clunky! :/