The people at Linden Labs who created Second Life… or at least, created the framework for their subscribers to create Second Life content for them, have a lot to learn about how to retain new subscribers. Apparently, they think one way is to disband the Mentor program… ::shakes head in disbelief:: and then wonder why their stats are trending downward. A number of SL bloggers have commented recently on the well-known but disturbing statistic that although Linden Labs/Second Life claim to sign up 10,000 new subscribers a month, they actually retain only about 10% of those new “Residents.” Some think…