When you post on the forum you are probably prompted to enter a Catchpa - this is to prevent spam on the forum. This system works very well in preventing spam - in the last 3 years it has stopped over 20,000 spam postings from polluting our forum.
However, it is a bit of a pain for us sailors who are not trying to spam. So, if you don't want to enter the Catchpa any more then reply to this thread and I will alter your status on the site so you won't be prompted for this anymore.
Thanks to our mighty commodore Bruce for raising the issue.