"The whole industry is still in the embryonic stage, " admits Thermocore Chief John Yianni.

FORBES: Peeking at Plaque

"Facebook prolongs the period it takes to get over someone, because you have an open window into their life, whether you want to or not, " says Yianni Garcia of New York, a consultant who helps companies use social media.

WSJ: How Facebook Can Ruin Your Friendships