1 To close interstitial advert windows that appear on Web sites which offer some ecommerce facility. Such windows often generate new windows, with the user clicking them very quickly in order to keep a clear screen: a process similar to that involved in the computer game Whack a Mole which involves continuously hitting the heads of moles which appear above ground level.
2 To continually shut down throwaway accounts that are used by spammers, the implication here being that as soon as one is closed down another appears.
Users without a subscription are not able to see the full content. Please,
or login to access all content.