Greetings
Is the example given an attempt at posting an image? If so the url is corrupted, it would appear to me that you have the syntax of the img tags correct otherwise. It is possible that the url you are using may not be from an approved host, and may be getting censored out of your post. A list of approved hosts can be found here:
POF Approved Image Hosts
An image hosted elsewheres may be getting censored and causing the problem.
Hopefully that will help you get on track.
We have a screenshot guide which can be seen here:
POF Screenshot Guide
Perhaps it may help some as well offering other hosting options (such as POFs Gallery).
Happy Piratin Matey