Amazon's fourth annual Prime Day kicked off Monday to much fanfare, but it didn't quite go off without a hitch.
Some users [reported](https://twitter.com/CNET/status/1018934859505385472) getting error messages, while others got stuck in a loop that kept redirecting them back to the main sale site.
The issues came in the opening minutes of what the e-commerce giant has touted as a shopping holiday bigger than Black Friday or Cyber Monday. Research firm eMarketer estimated the company could bring in revenues of as much as $3.4 billion during the event, eclipsing the estimated $2.4 billion spent last year.
Whether the glitches affect results will be closely watched by analysts and investors ー shares of Amazon, which hit all-time highs early in the day Monday, pared gains after news of the problems.
Prime Day began at 3 pm ET on Monday and lasts 36 hours. This year's event is six hours longer than last year's.
Conditions have been mostly nice for travelers flying ahead of and on Christmas Day, but some naughty disruptions plagued those flying with Southwest Airlines again this year.
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