In the old days I could click a button to hide threads in active convos

[OnlyHereToday]

I can't see that now, is that option still there somewhere please?

Yes it's still there, I have just done it, get thread up on your screen and the hide button is where it says watch / flip / hide this thread

Under the darker blue thick line where it says topics >> site stuff

Ah, thanks, it used to be a little minus sign but I can see that option now.