Ok..let me be honest and make a confession 
After a two year break I returned here a couple of months ago and started a number of threads about lesser-known composers: the area I mainly dealt in when I was active between 2007 and 2009.
I hope/d through these to encourage some interest in these composers.
My threads on Boris Blacher got 4 replies, Wilfred Josephs 2, Hans Gal 5, Halvor Haug 7, Randall Thompson 7 and Paul von Klenau precisely zero. Some of these replies were actually from me responding to a
comment.
There comes a point when one begins to wonder whether it is actually worth posting at all about the sort of composers who interest me
I-frankly-am not terribly interested in commenting about the 25th version
of a Mahler symphony which someone has bought....but that is just me 
There is no shortage of comments, on the other hand, in the Havergal Brian thread.
Somewhat discouraged, I joined the "Unsung Composers" Forum where there is much more discussion of lesser-known composers. That is a rather more focussed forum obviously.
I don't want to leave GMG....for one(very important) thing I have made some very good friends here and have met several of them in person. On the other hand I am likely to be posting less and probably unlikely
to be starting threads 
Well.........at least you have a response from someone who is contributing to the fall in numbers.
I'm going to have to 'roll up my sleeves' and put up that 'Mathias' thread!

Joseph Holbrooke,the so called 'Cock-er-nee Wagner',he's another one!!!!
Not sure if I can add anything new or original to the Mahler debate,much as I enjoy his music!

But I prefer it here meeself!

Have to say that two replies to a thread about Wilfred Joseph is quite allot,considering he's not exactly a well known composer. If I posted a thread about the elusive Gaze Cooper I would be very pleased to have even one reply! In fact,with a Cameo cd,including a short piece of his, & rumours of a forthcoming recording of a Piano Concerto,I,or someone else, may,(hopefully soon) have reason to do so?
Dundonnells observation about the Havergal Brian thread reminded me of a rather sarcastic comment about Brian,some years ago,which (roughly) described Brian as the 'most overrated underrated,least neglect neglected composer' of all time'. As a regular contributor the the HB thread,I don't agree specifically with that statement,but I do,somewhat, understand the exasperation of the writer (this was written quite a few years ago when Bantock & his like were still just names in musty old books!).