When Path first came out, I was frankly, kind of excited to try it out. I thought with Path's sleek UX/UI, the 150 friend limit being inspired by actual psychology research, and how it was "branded" to not be the next Facebook, but to run in unison with users' existing networks, that this was something that was going to explode.
They pretty much ruined their chances of that happening. It never ceases to amaze me that developers/companies think that they can spam users to increase traction. Users know when they are being spammed which leaves an extremely bitter taste in user's mouths.
"Twitter’s userbase skews more toward early adopters who might be interested in Path than Facebook users." This might be true, but I think people are going to remember this. Maybe it would work, because I could see Path just re-branding into a more intimate version of twitter, but only time will tell. For the most part, I think Path shot themselves in the foot pretty fucking well.