Not a critcism, but see my post on the help forum, I am not exactly dim when it comes to PC's, but I did find the upload a bit confusing so maybe some members have been put off by this especially if it didn't work for them? I know that the MyFinepix upload is usually very confusing for new members, the simpler the better so my post may help clarify it a little bit?
As to the new membership, well to be honest these things are often very slow to start with, even more established forums some of which I moderate on (not photography related) can be very slow at times and sometimes it's like talking to yoursef in order to generate some interest.
EDIT: I am sorry to say that the lengthy post I wanted to add in the HELP section was not allowed as I had been a member for less than 7 days so I was not allowed to post LINKS, this is another confusion to me as they were only links to Flickr images. I do understand the need to avoid spam by bots and crawlers, but sometimes this can have detrimental side effects, especially if you are encouraging people to post.
EDIT AGAIN: I have just tried to upoad an image into the HDR section and received this message New members are not allowed to post external links or emails for 7 days. Please contact the forum administrator for more information.
Now this may be something to do with my attempted post in the help section where I was asking about codes, but if we cannot even converse at this early stage without these messages then it is no surprise that there are few members posting.