E-book sales may be declining in the U.S. and U.K., but in South Korea, many people still enjoy swiping instead of leafing through their reading material. E-book sales there are growing steadily each year, driven in part by the popularity of web comics. Ridibooks, which claims to be Korea’s largest e-book provider, has raised a $20 million Series C to take advantage of the market. Read More on Tech Crunch