A record number of Americans are expected to shop from their computers Monday -- following on from the frenzy of Black Friday sales across the nation.

Despite incidents of gunfire and pepper spray at the sales that traditionally follow Thanksgiving, takings from this year's Black Friday were up to $52 billion from $45 billion last year, the National Retail Federation (NRF) said Sunday.

More than 226 million shoppers visited stores and websites over the weekend, up from 212 million last year, according to a survey for the NRF conducted by BIGresearch. The average holiday shopper spent about $398 over the weekend, up from $365 last year.

Shoppers also spent an average of $150 on the web -- 37.8 percent of their total weekend spending -- but the NRF is still expecting more than 122 million Americans to partake in further online shopping on Cyber Monday.

Last year's event was the biggest online shopping day of the year with $1 billion spent and 107 million Americans taking part, according to web-tracking company ComScore.

Eager to meet consumers' demands, almost eight in ten (78.4 percent) major retailers will have a special promotion for Cyber Monday, according to a survey conducted for Shop.org by BIGresearch.

The number of shoppers planning to use their smartphones or other mobile device on Cyber Monday also continues to rise.

In just two years, the number of Americans saying they would use their mobile device to shop on Cyber Monday has nearly tripled from just 3.6 million (3.8 percent) in 2009 to 17.8 million (14.5 percent) in 2011.

Additionally, 76 million Americans are expected to shop from work at some point during the holiday season.

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