I posted last night about the Groupon Barnes & Noble deal available when you shopped with Chicago as your city. Well this morning it is still available – if it’s not available at your city, try Washington, DC – it should be the main deal. It’s only $10 for $20 at Barnes & Noble, either online OR in-store! This $20 voucher will revert to $10 if not used by April 10, 2011. The $20 Groupon voucher is also valid on all sale items!! Click HERE to check it out!!