Lets move on 
Email
Send an email to everyone you know who might like the PTC idea or want to find
additional PTC sites. Don’t go spamming people! Use appropriate etiquette to all
people you send your emails too!
Live chat programs
Advertising your referrals in online chat rooms and IM programs can get a lot of
people’s
attention however make sure to use the appropriate etiquette and ensure not to
break
the house rules by spamming.