A software company is offering technology to protect websites from surfers using pop-up blocking software.
The software, called Anti-Theft, is designed to detect if someone is using an anti pop-up program to view web pages. Website owners deploying Anti-Theft can then refuse them access.
According to the Anti-Leech website the use of pop-up blocking software amounts to theft.
The site warns: "Most websites depend completely on revenue from advertising through banners and pop-ups.
"If you start trying to block that income you will still to cost the webmaster the same amount of money as before, but the webmaster won't earn any money from advertising to cover the expense.
"The result is obvious as this gets more and more common today. In the end this can mean that the website has to shut down."
Anti-Leech said the problem of software to block pop-ups was going to worsen for website owners as large universites, companies and schools start to install blocking programs on all their computers.
It calls on webmasters to use its software to block the blockers and save bandwidth for customers who will actually read their annoying adverts.
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