We're going to be adding a significant link sharing platform soon, which will include the ability for an agency and/or a freelancer to participate in link-backs with translatorpub in return for rewards (membership) based on their referring success.
Right now we facilitate this through the "Rewards" link in your profile, which will allow you to send e-mails to friends/colleagues, inviting them to join TranslatorPub. If they do so, and become a full member, your account receives amounts of time as a free full membership as well.
Hope that helps answer your question!
- Chris K.
----------------- Working hard to take the lead in online language websites!