In answer to the more recent posts this has been an "extra effort" for October started with a BoE letter back in March/April (Thanks WIFI BANDIT) and those newer small invites have been handed to mag routes and relatives.
The final figure for week 5 was 58 plus 12 listening in.
So it has crept up a little bit but still not even a match for the 75 publishers and my observation is that while there were a handful of new faces they all seemed a bit Misfit/Odd/Elderly/lonely types. Probably those long term return visits that look good padding out reports but going nowhere.
Let's see what happens as winter draws in. We've had an exceptionally mild and fairly dry October this year in my neck of the woods.