Generally sajha is pretty laid back regarding users who share their website addresses. If you share once or twice it makes sense that you are trying to introduce your site, but when someone begins to promote their site excessively then action has to be taken so that it is fair for others who actually pay to promote their sites. There are also users who use multiple usernames to promote their sites.
Please know that this is nothing personal. You are allowed to introduce and share your site, but not promote it excessively. There are many users who have paid banner campaigns in sajha - and it only sets a wrong precedence when users start to promote their sites freely and excessively.
Kind Regards