I'm a librarian who loves anime, manga, and reading a wide variety of genres.
Yen Press is going to be bad for my wallet and shelf space.
That said, so many light novels are so badly written/translated that I wouldn't recommend them to anyone but other anime/manga fans, and even then I'd probably issue "clunky writing" disclaimers. We'll see if this latest push lasts.
Yen Press's Spice & Wolf releases have been okay, but a little clunky. I love the characters enough to continue on, despite that. Sword Art Online is on my list (saw it at a bookstore last night but was unwilling to pay the full $13 for it), and I'm eagerly awaiting the paper release of the Another novel.