Korea has reached 90 percent high-speed Internet saturation in April this year with 14.3 million subscribers, according to the Ministry of Information and Communication, and the penetration keeps on growing.

This figure defied the idea the broadband penetration rate had already reached its limit a couple of years ago. Yet, an official at the Information Ministry said, that's not the case.

"The number gained about 70,000 a month this year on average, or upside of 400,000 in the first half alone. The overall figure is on pace to approach 15 million late this year," he said.

In and around Seoul, almost every household is connected to broadband service, with the combined penetration rate even over 100 percent.

Experts said the seamless increase of high-speed Internet was due to the emergence of the country's number three broadband operator LG Powercomm and other small-sized companies.