Sushi is a new GNOME 3.2 tool similar to Gloobus Preview that provides quick file previews. To use it, select a file in Nautilus and then press the SPACE bar.

Sushi works with both Unity and GNOME Shell and it actually doesn't depend on Nautilus so other file managers can make use of it.

As promised, the latest official GNOME Shell Extensions (version 3.2.0) are now available in the WebUpd8 GNOME 3 PPA for Ubuntu 11.10 Oneiric Ocelot. This PPA is an attempt to have all the stable GNOME 3.2 packages that aren't available in the official Ubuntu 11.10 repositories in a single place. Please note that I did not package this. I'm only uploading these packages to a single PPA.

Claudio @ ubuntued.info has created a tool for tweaking the LightDM appearance called Simple LightDM Manager.

For now, the tool lets you change the LightDM background (and select between an image or solid color) or the logo and that's about it. For now there aren't too many things you can tweak about LightDM anyway but hopefully when we'll have enough LighDM themes, this tool will also be able to switch between themes.

Starting with version 0.47, DockBarX supports separate themes for DockBarX, DockX and window list and some cool new themes have already started to show up on websites like DeviantArt.

One theme I really like is called "Brit" (inspired by "Elegant Brit" GTK theme) and comes with everything you need: DockBarX and window list themes as well as two dock (for DockX) themes.

GNOME Documents is a new application (part of GNOME 3.2) that works with both Unity and GNOME Shell which allows you to manage both online (Google Docs) and local documents.

For now, the application can only be used for searching and opening any document on your system or Google Docs so it's basically just a way to access all your documents in one place.

A quick update for those of you who want to use a global menu in GNOME Shell: WebUpd8 reader Micah got GNOME Shell Global Menu to work with GNOME Shell 3.2, so I've updated the original instructions in our post: Get A Global Menu In GNOME Shell (there are instructions for both GNOME Shell 3.0 and 3.2 - Fedora and Ubuntu).

In case you've missed it, here's the GNOME Shell Global Menu video I've recorded a while back:

A Zeitgeist extension for GNOME Shell has been released today. The extension is based on the work of GSoC student Akshay Gupta (kitallis) and it requires GNOME Shell 3.2.

GNOME 3.2 got a "web application mode" through Epiphany web browser, allowing you to save websites as web apps. These web apps show up as regular applications in both GNOME Shell and Unity and can be pinned to GNOME Shell's Dash or Unity's launcher, etc. More about them in this post: GNOME 3.2 to get web application mode.

Here is WebUpd8 saved as a web application through Epiphany (using a custom icon) under GNOME 3.2 and Unity:

While trying to optimize the elementary OS performance, Sergey Davidoff stumbled upon a project called compcache that creates a RAM based block device which acts as a swap disk, but is compressed and stored in memory instead of swap disk (which is slow), allowing very fast I/O and increasing the amount of memory available before the system starts swapping to disk. compcache was later re-written under the name zRam and is now integrated into the Linux kernel.