From the Chrome store:

    This extension adds a new option to your browser’s right-click menu:
    "Open link anonymously via Webfuse." 

    It also adds a quick-access button next to links on major search engines
    for fast, private browsing. When selected, the link is opened in 
    a Virtual Web Session — a secure, sandboxed environment hosted on
    remote infrastructure.

I like the idea and the following is more feedback than complaint.

With little detail about Webfuse, it comes off as some unknown entity and that seems unfortunate. Beyond that, the overall description raises more questions (for me) than it answers.

This is what I wondered when I read the description:

    What even is Webfuse? 
    Is the extension always inactive unless a user triggers an action?
    Does the extension do anything that isn't explicitly detailed
    in the description?

Regarding the rest of the description:

    Whose infra are the sandboxes sitting on? 
    What is logged? What is the policy for those logs?
    Are new sandboxes created for each opened link?
    What happens to a sandbox when a page is exited? Is it reused? Does
    any of it persist? For how long?
    Are former sandboxes scrubbed or just deleted?

I looked a bit and found the product pages for Webfuse - which were a lot more substantive than I expected. I think chatter about Websense (in the ext desc), would lend some legitimacy and cachet to the extension.

That said, I don't know what Google does/doesn't allow on an extension page. However, if you can better associate Webfuse with the extension and chat-up that this is a free Webfuse service, I believe it'd make the ext feel less unknown.

Regarding my other questions, those are things that I'd want to know. I believe they're things that security-aware folks want to know (and they seems to be your audience). Putting NetSec meat in easy reach might instantly generate good vibes.