Both posting (new threads) and replying seems to be working fine at this point, so I think teething issues are being ironed out.
It will be interesting to see how many folks from the DPR migrate over. Until they do, content is likely to be a bit sparse here. Unless of course, somebody devises a way to import the existing accumulated discussions from the 'old' site (I assume that's unlikely for multiple reasons).
When you have upload the photo, press of the photobox "Inset into message". Now you can delete the uploaded photo link, if you want and the photo will remain insert.
The 4mb limit is going to be a problem for people with high res cameras. Many of ys like to pixel peep to examine closely. Another thing. After editing a post you have to choose "edit reply" which is confusing. The text should be changed to "post reply".
Welcome Tom
Looks like we will have a bit of learning curve with this site. In spite of its limitations it is much better than no gathering place at all.
Jerry
Decent JPEG renders that are 4MB or less are typically less than 5 megapixels, so it's not only people with high res cameras that will hit that limit.
It's also going to be important to be able to embed files in different formats - ideally including RAW, or at least a lossless format, in order to discuss aspects of processing and review the SOOC renders.
However I expect the forum admins may need a little time to iron out some of these details...
I'm not Bob (obviously) - but I can answer your question.
The "disabled button" is a curiously named menu that, if you click on it, pops up options for subscribing to the thread.
That said, there seems to be some funkiness with subscriptions that they're working to resolve. But at a minimum, any thread you subscribe to will appear in the list if you go to "Threads" (via the button at top left of screen) and then click on the "All threads" button and select the alternative option for "Subscribed threads".
It's not as seamless or intuitive a way to keep track of things as we had at DPR, but it provides an ok stopgap until they can get the site features built up a bit further...