I would weigh that quite heavily -- treat it like a nibble on the line as if you were fishing. They did not bite down on the hook, i.e. checked out through the shopping cart, but they were inspecting the bait. i would also pay extra attention to domains where the WHOIS count is displayed in red or where the WHOIS count is orange with a high count. These are also often domains in demand or are otherwise strategic. PRO TIP: If you see a domain that has either of these signals, renew it for 2 or more years and move from PPC to lander? Why? You will cure the prospect of any illusion that you are going to drop the domain.