The need to become a member serves two purposes - it prevents spam, and it makes it easier for members to post as what they post will only be seen by those who share their interest in Devotional Sex.
If you have spent some time reading the website then you have proven your interest and so you are very welcome to join.
The membership process asks you to write a few lines on why you are interested in Devotional Sex. Probably just an hours reading of the website is all that you need to be able to write a few words on what attracts you to this technique.
So please don't be put off by the membership process. It would be wonderful to have more members!