Third-party companies also compile and sell contact information to companies and organizations. Customer surveys, public records, retail reports, and data software can all be used to collect demographic trends; other companies use only permission-based lists. These companies can usually narrow their mailing lists by demographic—for instance, to only working mothers who have children under three, with at least a bachelor’s degree, who own their own homes, have at least one credit card, a credit score of more than 560, and make $50,000 or more a year. Companies purchase these demographic lisst, and send their direct mail offers to this very targeted market.
Push marketing is a proactive technique that enables e-marketers to "push" their product/service information to Web visitors or shoppers without their requesting it. Banner advertising, pop-up advertising, e-mail promotion, and spamming belong to push marketing. For instance, e-marketers can rent designated space from Internet service providers such as America Online or MSN for their banner or pop-up ads. Using animated graphics, appealing messages, and links, e-marketers try to lure visitors to their sites to buy their products or services. Many Internet users, however, find such ads annoying and employ software that blocks pop-ups and banner ads. <