Today is Cyber Monday, a day when online retailers attempt to generate the kind of sales excitement that brick-and-mortar shops do the day after Thanksgiving.

Increasingly, however, those brick-and-mortar and online retailers are looking a lot alike.

"Amazon still rules, but Walmart and Target are catching up," writes TechCrunch blogger Erick Schonfeld.

Walmart.com, Target.com and Sears.com are the only major online retailers expected to see significant traffic spikes this year, according to research by J.P. Morgan analyst Imran Khan.

About 50 percent of online shoppers spent money at Amazon.com in 2007, and roughly the same percent say they will this year, too.

Target, meanwhile, saw business from less than 22 percent of online shoppers last year, but this year that slice should grow to nearly 27 percent of online shoppers, according to the research.

See all the fancy charts and graphs at TechCrunch.