Memphis immigration attorney Greg Siskind will moderate a three-part teleconference series on Haiti Immigration Relief Wednesday from 1 p.m. to 2 p.m. The teleconference will include immigration options for Haitians. For more information or to register, visit www.ilw.com/seminars/haiti.shtm#bios. Registration will close today at 10:59 a.m.

The Downtown Neighborhood Association will meet today at 6:30 p.m. at Earnestine & Hazels, 531 S. Main St. Terrance Fluker of the U.S. Census Bureau will speak. A social will precede the meeting at 6 p.m. Entertainment will be provided by Tori Norton.

The Alliance for Nonprofit Excellence will hold a workshop Wednesday from 8:30 a.m. to 3:30 p.m. at its office, 5100 Poplar Ave., Suite 502. Judith Millesen, an associate professor at Ohio University, will speak. Cost is $99 for members, $150 for nonmembers and $89 for those in the Program for Nonprofit Excellence. For more information, call 684-6605 or visit www.npexcellence.org.

The Sales and Marketing Society of the Mid-South will present “The PLET Strategy to Understanding and Successfully Using Twitter” Wednesday from 11:30 a.m. to 1 p.m. at Union University, 2745 Hacks Cross Road. Cost is free for members and $30 for nonmembers. For more information, call 866-290-4241.

The Le Bon Vin Gala Dinner will be held Wednesday at 6:30 p.m. at Fleming’s Fine Steakhouse & Wine Bar, 6245 Poplar Ave. Guests will enjoy a three-course dinner and wine tasting. The dinner will benefit the Le Bonheur Foundation. Cost is $250 per person. Seating is limited. For reservations, call 287-6308.

The Memphis Advertising Federation will hold a luncheon Thursday from 11:45 a.m. to 1:15 p.m. at the Holiday Inn-University of Memphis, 3700 Central Ave. James Datri, president and chief executive officer of the American Advertising Federation, will speak. Cost is free for members and $25 for guests. For reservations, e-mail info@aafmemphis.org.

Baker, Donelson, Bearman, Caldwell & Berkowitz PC will host a roundtable discussion with attorney Grady Garrison titled “Challenging the Patentability of Genes” Thursday from noon to 1 p.m. at the firm’s Downtown office on the 20th floor at 165 Madison Ave. To register, call 577-2275 or e-mail bmeeker@bakerdonelson.com.