-With google retiring parked domains, you may want to host a parking page yourself... which is easy to do yourself but if you have hundreds of domains, what do you do? Assuming Kloxo is installed (which preassumes centos 5), with the following script, you can add all of them in one go parked to a parent domain with the following script:
if [[ $# < 1 ]]; then
echo "Mass Domain Add via Kloxo"
echo "addparked parentdomain.com <1perlinedomainfile.txt"
echo addparked parentdomain.com
while read line
/script/add --parent-class=domain --parent-name=$1 --class=addondomain --name=$line--v-type=parked