Phone / Email obfuscation is basically an art of hiding phone numbers from harvesters used by spammers. A contact page/ section is on every half decent website, which cannot be complete with a phone number and an email address, but be aware that there are thousands of contacts collector bots crawling through the internet grabbing all emails and phone numbers they can get. Within a few days your email may end up in a spammer's database, soon you will start receiving exciting offers and investment opportunities. If you have a website and planning to put your address for your customers you need to obscure your phone number from spammers.