Firstly, a short introduction of "Lenses" via the Ubuntu wiki: "Lenses used to be known as Places. When referring to code and APIs we still use the term Places, but the user-visible name is Lenses. The Places name will be retired in 11.10".
I've recently came upon a very interesting Unity Lens for Gwibber developed by Ken VanDine and couldn't wait to try it but it didn't really work until the latest Unity update released a few hours ago. You can use the Unity Gwibber Lens to quickly access your Gwibber posts, replies, private messages and so on. And it also comes with a search.
To use it you can click the Gwibber icon on the Unity dock (it also has a keyboard shortcut so you can use Super + G) or directly from Dash but in that case only people will show up and not tweets / posts (I think this is a bug though).
In case that sounds a bit confusing, check out the video below to see exactly how the Unity Gwibber Lens works:
Download Unity Gwibber Lens
Unity Gwibber Lens is still experimental and not everything works. You'll also find some bugs like you can see in the above video (slowness, etc.).
Update: you can now install Unity Gwibber Lens from the Gwibber PPA. Add the PPA and install it using the commands below:
sudo add-apt-repository ppa:gwibber-team/ppa sudo apt-get update sudo apt-get install unity-lens-gwibber
Then log out and log back in (makes sure you've already added some accounts in Gwibber before logging out).
You can also get the latest BZR code from HERE.