Why use Flock when you can use Lazy Sheep in any browser?
The one feature that I found convenient in Flock is the star feature. A quick and easy way to bookmark a page with delicious. And that’s exactly what Lazy Sheep does. It’s a bookmarklet that adds the current page to your delicious account, using the same tags that everybody else already used for it. One click, and you’re done. Works with (almost) any browser.
The only problem I’ve found with it is that his server is frequently down, so you’ll don’t throw out your old delicious bookmarklet just yet.