Robert Young writes on Om Malik’s blog about potential competitors:
From a strategic viewpoint, there are two fundamental qualifiers that anyone whos looking into this space should first consider:
1. look for social media services that specifically target the markets low-hanging fruit, specifically the teenage demographic (e.g. the older the demo, the less valuable the property in this context); and then
2. further filter out the contenders by identifying those services that have successfully crossed the chasm of early-stage viral adoption (the elbowof the hockey-stick adoption curve).