[AlanEdge]

There is always room for new startups to do the same thing, but in consumer internet it typically requires a drastically different angle because network effects and switching costs kick in (whereas it does not for a single pizza parlor).

This is why Friendster was forced to focus on China and give up hope in US.

YouTube's competitors had a hard time moving in on mass-consumer video (they were forced to go white label or focus on businesses, monetization, or analytics) due to the push-pull effect of YouTube's entrenched publisher-viewer community (and their network effect of widgets scattered across the web).

Kijiji positioned dramatically different than Craigslist (100% ad supported and much better UI) and it was seeded with a different audience (all the inactive eBay users were spammed giving it overnight critical mass).

SmugMug does a terribly good job and its not clear what angle you would take in entering their market. They have scale (300K paying users) and killer customer support (which is critical for their target customer who typically lacks technical expertise) and can outprice folks looking to replicate their offering with a significant incremental improvement to their service.

What angles to entering the photo-sharing market do you folks see?