Reality TV exposure can be either a blessing or a curse for a new act. For Steel Magnolia, season-two winner of CMT's "Can You Duet?," that exposure has definitely been a blessing by way of a top five single ("Keep On Lovin' You") and an opening slot on Brad Paisley's 2010 tour. Steel Magnolia reaped yet another blessing this week with its self-titled debut album on Big Machine. The set arrives at No. 3 on Billboard's Top Country Albums chart and at No. 7 on the Billboard 200 with first-week sales of 28,000, according to Nielsen SoundScan. Cake Tops Billboard 200 with 'Showroom of Compassion' A real-life couple who met at a Nashville karaoke bar, Steel Magnolia's Meghan Linsey and Joshua Scott Jones admit they were initially hesitant about appearing on "Can You Duet?" Linsey says, "There is such a stigma about people not being true artists when you come from reality TV shows." "We were too hungry to have all that...