San Francisco.– Internet retailers hope the convenience of the Web, plus discounts and deals, spur still-nervous shoppers to spend more online this holiday season, even as traditional retailers brace for mediocre sales.

Internet analysts at comScore Inc. expect online retail revenue to rise 3 percent to $28.8 billion for the months of November and December.

That includes the Web sites of traditional retailers, such as Macy's, but excludes auctions, travel and large corporate purchases.