Blocking connection to Rapidshare.com web page

/system script \
add name="block_rapidshare" source={ \
 :foreach i in=\
"62.67.46.0/24,62.67.57.0/24,64.215.245.0/24,80.129.35.0/24,80.239.151.0/24, \
80.239.159.0/24,80.239.236.0/24,82.129.35.0/24,82.129.36.0/24,82.129.39.0/24, \
195.122.131.0/24,195.219.1.0/24,207.138.168.0/24,212.162.63.0/24" \
do={ /ip firewall filter add chain=forward dst-address=$i dst-port=80 protocol=tcp action=drop } \
};

second simple method is :-

add rules to your firewall:-

ip firewall filter add chain=forward content=rapidshare action=drop