Helping.org, the year-old philanthropic Web site of the AOL Time Warner Foundation, helped raise more than $1.1 million online in November and December.
That brought to nearly $2.4 million the total contributed through the site since it was launched in October 1999.
The average donation during the holidays grew to $207, up from $158 throughout 2000.
The holidays also saw a $50,000 donation to a charity, the biggest ever given through the Web site, which has handled three separate contributions of $20,000 each.
The site also matched more than 14,400 volunteers with activities and events in their communities during the holidays.
That brought to more than 60,000 people the number of volunteers matched with charities since helping.org was launched.