(MONEY Magazine) – If you'd like to complement your gift buying with some charitable giving this holiday season, the Web can lend a hand in two ways.

SHOP AND GIVE: At a dozen or so online shopping portals, a portion of what you spend goes to the charity of your choice. (These sites donate some or all of the 5% to 15% commission Web retailers typically pay the portals to sell merchandise through the sites.) Our favorite is iGive.com (www.igive.com). You can shop at more than 200 Web retailers, including Barnes & Noble.com, Buy.com and Dell, and pick a beneficiary from among the almost 12,000 charities registered at the site--or name another one, as long as you have the proper mailing address. IGive.com clearly discloses how much of each purchase goes to charity (4% at Tavolo, for example, and 5% at Lucy.com). By making donations voluntary, the site enables you to take a tax deduction. One caveat: In order for the charity to get the money, you must send your e-mail receipts to iGive.com. Another site to check out is Ebates.com (www.ebates.com), a shopping portal that rebates commissions from 400 or so participating merchants to consumers. As of mid-November, the site plans to give shoppers the option of directing that money to a charity instead of taking the cash themselves.

JUST GIVE: To make a direct charitable donation in someone else's honor, go to Charitygift.com (www.charitygift.com), where you can donate money to any charity (as long as it's registered as a charity with the Internal Revenue Service). For an extra $6.95, Charitygift.com will send a pop-up note card (or, for $3.95, an e-card) informing the person of your donation. The tax deduction is yours to take.

--JUDY FELDMAN