Tamara Rosenthal, executive director of brand marketing at New York-based flash sales site ideeli, has worked everywhere from Lacoste to Ferragamo in marketing to Vogue in advertising to...A Small World. That's right--the branding veteran's most recent position was figuring out a branding strategy for the niche social networking site. Now, she's doing the same at ideeli, bringing years of retail and publishing experience along for the ride. We recently sat down with Rosenthal to discuss ideeli's present, its future, and why she's happy she got into online marketing earlier than most.