I "use" (happily, I must say) Greymatter on a couple of my sites. Other than SPAM-battling, the use is painless. I do not do anything magic with it -- simply modify the templates as needed for what I want, etc.
If there is someone out there who would comment back on the following: Thanks.
I have a reason to set up something similar to an online class/workshop environment. I do not have large dollar resources (who does, today?).
I expect to have only about ten "students" online at a time and an instructor to moderate the class during specific/known hours. The students would be, naturally, interacting at their own speed/time. As they do their work, they would no doubt share images of their work-progress (the topic is "quilting").
I can definitely do the above with the Greymatter that I have now(1.8.2).
Would you use Greymatter for anything "new" if you did not mind that Greymatter is no longer supported? (I can handle tech aspects OK and the class/workshop is not mission-critical! The students/moderator are something I can manage happy/sad/etc. if something breaks).
I Googled and see Wordpress mentioned. I have NOT used Wordpress and, for that matter, I have not looked at other solutions to Greymatter.
Any comment-back is appreciated; either here or via eMail (let me know if you want a pointer-to to find my eMail id if it is no longer around/accessible to you) if you prefer to comment "offline".
Thank you in advance; I am sure that if you respond you will save me time in further investigation.
Thank you, as well, for all that you have done over the years!