NEW YORK —
As a result, the period between Thanksgiving and Cyber Monday has have become busy for online shopping as well. Indeed, IBM Benchmark, which tracks online sales, said on Thanksgiving, a day that historically had not been big for online shopping, online sales this year rose 17.4 percent over 2011. Of that, mobile shopping, or shopping on smartphones and tablets, rose 18.3 percent. Meanwhile, online sales on Black Friday were up 20.7 percent.