Postbit yada postbit_legacy templatelerinden hangisini kullanıyorsan;

             <!-- icon and title -->
            <div class="smallfont">
                <if condition="$show['messageicon']"><img class="inlineimg" src="https://www.r10.net/vbulletin/$post[iconpath]" alt="$post[icontitle]" border="0" /></if>
                <if condition="$post['title']"><strong>$post[title]</strong></if>
            </div>
            <hr size="1" style="color:$stylevar[tborder_bgcolor]" />
            <!-- / icon and title -->

kodlarını bul ve aşağıdakiyle değiştir.

             <!-- icon and title -->
            <div class="smallfont">
                <if condition="$show['messageicon']"><img class="inlineimg" src="https://www.r10.net/vbulletin/$post[iconpath]" alt="$post[icontitle]" border="0" /></if>
                <marquee><if condition="$post['title']"><strong>$post[title]</strong></if></marquee>
            </div>
            <hr size="1" style="color:$stylevar[tborder_bgcolor]" />
            <!-- / icon and title -->