The New York Times provides some background on the annual event for independent record shops:

Though a promotional event, Record Day underscores the mini-renaissance of vinyl. As recently as 2008, only 2.9 million LPs were sold in the United States, representing about 0.7 percent of annual album sales, according to the Recording Industry Association of America. Last year those sales climbed to 9.4 million, representing 3 percent of all albums, and the independent, off-the-grid nature of many of those sales may mean that vinyl’s numbers are underreported.

I’m generally skeptical about the persistent rumors of a mini-resurgence in vinyl sales, but it seems real.

Record Store Day is today so get out there and demonstrate your authenticity by buying something.