I use Flickr, but none of my friends who aren't photographers do... so when I update my stream nobody sees it (unless I use a Flickr-Facebook bridge app, which is clunky and doesn't plug in nicely).

There's a lot to be said for having your content pushed to your network in a way that's easy to use.

In fact, Buzz's integration of "external feeds" is much better done than FB. I'd hope this applies to Google+ also.

Its refreshing with competition, perhaps even on the privacy parts different actors could make each other respect their users more.

I dont like the UI of flickr (cant even use it, and Im a comp-sci major) and it doesnt integrate well with Facebook (tagging), where most of my friends are, sadly. I guess flickr might have improved since I last gave it a chance, but still something doesnt feel good about it. The same for picasa.

Yea I dislike Picasa as well. I was disapointed to see Google+ integrating with it. Although there really isn't an alternative...