Like many, I monitor WSPRnet to see who I am spotting and who is spotting me. In my case I often do this from the comfort of the lounge, whilst doing other things. I notice that WSPRnet is very slow again today. In fact, the last few times I tried it failed to connect at all.
UPDATE 1525z: WSPRnet seems to be working at the moment with a 472kHz spot of my 5mW ERP by M0LMH (223km) a short while ago. Sadly if WSPRnet is not reliable it rather ruins the "near instant feedback" of WSPR.
UPDATE 1652z: If WSPRnet really is just done by volunteers for free I am amazed it is as good as it is. I for one just use it and milk it. Like many, as anonymous says below, I'd happily chip in some cash to help provide a reliable service. Not all can afford to do so, but I use WSPRnet each and every day just about. Without WSPRnet, WSPR would not be a quarter as good as it is.