Network Solutions - New Funda

As per Network Solutions site:

In response to customer concerns about domain names being registered by someone else just after they have conducted a domain name search, Network Solutions is implementing a new security measure to protect our customers.
What is the Customer Protection Measure?
Network Solutions may reserve domain names that are searched on our Web site for up to 4 days. During this period, these domain names will only be available to register at networksolutions.com.
This customer protection measure may be enabled when a customer searches for an available .com domain name at networksolutions.com but decides not to purchase the name immediately after conducting the search.
After the search ends, Network Solutions will put the domain name on reserve. During this reservation period, the name is not active and Network Solutions does not monetize the traffic on these domains.
If a customer searches for the domain again during the next 4 days at networksolutions.com the domain will be available to register.
If the domain name is not purchased within 4 days, it will be released back to the registry and will be available for registration through any registrar.
Domain names searched on the WHOIS search page will NOT be reserved.
This protection measure provides our customers the opportunity to register domains they have previously searched without the fear that the name will be already taken through Front Running.
By holding the searched domains at Network Solutions for a short period, it allows our customers to take the time to decide whether this is the domain name that they really want to register.


http://about-networksolutions.com/customer-protection-measure.php

But they are still silent whether they sell there whois search.

Front Running

Front Running is when an individual registers domains within minutes or hours after someone else has conducted a domain name search on a registrar’s site, performed a WHOIS query or typed a domain in the browser to see if there is an active Web site. Front Runners may get access to these searches through Internet Service Providers, Spyware, or registries. Front Running allows these individuals to attempt to make money from the domain through pay-per-click ads or by re-selling the domain in the aftermarket at a marked up price.
(Network Solutions)