The e-bookseller Kobo added $50 million in new funding last month (including $13 million from existing investors), according to this Paid Content report, which comments that the amounts are “pretty huge”:

All the news is intended to show that Kobo, which has been closely aligned with Borders, is not dependent on the bankrupt book chain and that it can move forward on its own. Still, given the competition from Amazon‘s Kindle, not to mention the Sony eReader and Barnes & Noble‘s Nook line, Kobo has enormous challenges in capturing greater market share.

In March Paid Content reported that Borders “isn’t listed as a participant” in the current round of founding, though the company is still partially owned by the bankrupt book chain. It was founded in 2009 as a spin off of Canada’s Indigo Books & Music.