[CN7R]

Slack: used it at a hackathon and found it better than Facebook or Skype or whatever groups use to organize; happy that the club I joined recently as an officer is using it for communication

Uber & Lyft: haven't used it personally because public transportation is cheaper and I can wait, even though they were giving out free credit on my campus; I think carsharing is here to stay, especially if selfdriving cars become mainstream.

AirBnB: surprisingly cheap, found a $200 a night place in downtown LA for 6 people; I enjoy the concept of people sharing their homes and introducing tourists to local culture; however, some regulation is needed to protect both homeowners (from issues like squatting), customers, and renters -- no home should be used for the sole intent of renting to AirBnB and acting as a hotel.

Dropbox: I only use Google Drice so I can't say.

GitHub: hasn't this company been around long enough so that it isn't just hype -- anyhow they should find a way to stop burning so much money.

Stripe: I've heard their API is easier to use than competitors, and it seems they launched Atlas this year to diversify themselves from process payments to include business incorporation.

[krakensden]

Github used to be a no-vc company, then they took a bunch of money and grew really fast. I do not know if they are profitable again, but this two part history is why people worry.

[pmlnr]

Uber & Lyft are NOT carsharing. Carsharing is when you let someone else use your car without you being needed.