14. A method comprising: sending, by a computing device, a plurality of invitations to potential members of a contact information sharing network; determining a plurality of conversion rates respectively for the plurality of invitations based on a respective number of potential members that joined the contact information sharing network after being sent a respective one of the plurality of invitations to join the contact information sharing network; determining, based on the plurality of conversion rates, a highest conversion rate invitation of the plurality of invitations; determining one or more additional potential members to invite to the contact information sharing network; and sending, to the one or more additional potential members, the highest conversion rate invitation.
15. The method of claim 14 , further comprising: selecting a subset of aesthetic appeal related features from a variety of aesthetic appeal related features to be included in the highest conversion rate invitation based on empirical data showing the subset of the aesthetic appeal related features is statistically determined to prompt a response to the highest conversion rate invitation.