Invitations are a great way for ShareGrid to grow organically. If you feel a friend or colleague would be a great addition to the community, simply click on your profile photo on the upper right hand corner of your screen, and 'Give $20 Get $20'. You can also follow this link:
https://www.sharegrid.com/invitations/new
Here you can enter email addresses to invite those you know to join the ShareGrid community. After someone you know signs up and then makes their first rental, you'll get $20 off your next rental of $100.