Hi and welcome to the MS forum.
Most of our MS members tend to post in the general MS forum regardless of the stage of MS they are in. I guess the PPMS/SPMS thread is good for specific questions relating only to primary progressive and secondary progressive MS. I think our MS community has just blended into one big group. As you'll see our PPMS, SPMS and RRMS members all post in the general MS forum and The Stumble Inn. The Stumble Inn is a sub-forum to the MS forum where we can discuss topics other than MS. Here's a link:
http://neurotalk.psychcentral.com/forum102.html. Please visit The Stumble Inn as we have lots of fun topics always going on there.