Hi all DP Member.... I have some URL from one of french domain. When I put them as signature in forum with keyword and URL. Most of forum does not support it because in URL some characters are in french. Its all happening because of Unicode. The forum which supports the Unicode, supports my signature but other are not. After that I have replaced my French character with respective English character and I have started link building. Since now I have not faced any problem and I am also getting good result from Big G. Same technique can be used in German Domain. Just want to share this with all you SEO guys..... If you have other solution related to it, you can share it...