Play by your own rules.
Listen to your users more than the press. Don’t get sucked into the gravity hole between you and your competition. Ruthlessly run your own path, not someone else’s.
A great story about the Gowalla vs Foursquare battle. Can’t say I don’t see a ton of similiarities here with what happened with Posterous.
I started the company with an idea around mobile photo sharing using email. It was chasing the competition that took us down the route of blogging.
Blogging platforms already had a known feature set, a known set of success metrics, known competitors. It’s easier to enter an existing market as an underdog, than it is to do something truly new and unique.