Hi All;

Then when I submit my URL to the social sites I receive this message (URL is invalid or blocked). Can someone help me what is this ... What should I do .... I submit my URL to many sites, but all social sites give me this message. Please help me.

What is the web address your are trying to post? If it has adult content on it or pertains to illegal activity, social bookmarking sites will block it. On the other hand if the URL you are trying to post has weird numbers and characters in it they might classify the link as "invalid".

well you have to check that the site you submit is online, also sb sites sometimes blocks subdomains and article directories to prevent spam.