Methods and Systems for Finding Connections Among Subscribers to an Email Campaign

1 . A method to find connections among subscribers to a particular electronic mail (email) newsletter, comprising:

receive a list of email addresses with each email address representing a subscriber to the particular email newsletter;

determine other email newsletters to which the subscribers subscribe;

determine total number of the other email newsletters to which each subscriber subscribes;

determine which of the other email newsletters are common to each pair of the subscribers;

determine number of the other email newsletters common to the each pair of the subscribers;

based on the number of the other email newsletters in common among to the each pair of the subscribers, the total number of the other email newsletters to which a first of the each pair of the subscribers subscribes, and the total number of the other email newsletters to which a second of the each pair of the subscribers subscribes, determine the connections among the respective pairs of the subscribers to the particular email newsletter,

determine a weightiest connection of the connections among the respective pairs of the subscribers;

determine weightiest connection email newsletters from the other email newsletters with the weightiest connection email newsletters being associated with the weightiest connection of the connections;

selectively display a page of each of the weightiest connection email newsletters.

2 . (canceled)

3 . The method of claim 1 , wherein determining the connections among the subscribers to the particular email newsletters comprises using a cosine similarity function.

4 . (canceled)

5 . The method of claim 1 , further comprising:

prior to the selectively display of the page of each of the weightiest connection email newsletters, determining whether each of the weightiest connection email newsletters is public; and

only selectively displaying the page of each of the public weightiest connection email newsletters.

6 . The method of claim 1 , wherein the other email newsletters to which the subscribers subscribe comprise other public email newsletters.

7 . A method for finding business information for a customer about subscribers to an email newsletter:

for each subscriber to the email newsletter, determining subscriptions to other email newsletters;

for the subscribers, determining total number of the subscriptions to the other email newsletters;

for each pair of subscribers to the email newsletter, determining

which of the other email newsletters the pair has in common, and

how many of the other email newsletters the pair has in common as common number;

for each pair of subscribers to the email newsletter, determining a connection value between the pair

by dividing numerator including the common number

by denominator including square root of the total number of the subscriptions to the other email newsletters of one of the pair of subscribers multiplied by square root of the total number of the subscriptions to the other email publications of the other of the pair of subscribers; and

from the connection values for each pair of subscribers, determining a weightiest connection value;

determining the pair of subscribers having the weightiest connection value;

determining the other email newsletters the pair of subscribers having the weightiest connection value have in common; and

providing the customer with the business information on the other email newsletters the pair of subscribers having the weightiest connection value have in common.

8 . The method of claim 7 , wherein determining the subscriptions to the other email newsletters comprises determining the subscriptions to other public email newsletters.

9 . The method of claim 7 , wherein providing the customer with the business information on the other email newsletters the pair of subscribers having the weightiest connection value have in common comprises providing the customer with a display of at least part of the one or more of the other email newsletters the pair of subscribers having the weightiest connection value have in common.

10 . In a system that stores information about email campaigners including the respective lists of email addresses for each email campaign of each email campaigner, the email newsletters for each email campaign, and whether the email newsletters are public or private, a method for providing an email campaigner with information about common public email newsletters between two email addresses on a list of email addresses of the email campaigner, comprising:

receiving an identification of the list of email addresses from the email campaigner;

determining number of email newsletters sent to a first email address on the list of email addresses;

determining number of email newsletters sent to a second email address on the list of email addresses;

comparing the email newsletters sent to the first email address with the email newsletters sent to the second email address to find public email newsletters common to both the first email address and the second email address;

determining number of common public email newsletters;

finding a connection value between the first email address and the second email address by using the number of email newsletters sent to the first email address, the number of email newsletters sent to the second email address, and number of the public email newsletters common to both the first email address and the second email address; and

presenting the connection value to the email campaigner.

11 . The method of claim 10 , further comprising:

selectively displaying at least a part of each of the public email newsletters common to both the first email address and the second email address.