I've always been curious about them and today Scribd has a really good deal of half off their usual price, so it's something like $12 dollars for 3 months, $25 for 6 months, or $50 for 12 months.

Is it worth getting? I love reading stuff on my phone but I also go to my library often for free, and I'm curious about how their selection is. Scribd mentions half a million books which... is honestly not that many?