The new YubNub service looks fairly interesting. It's a concept that's been hashed out a million times by individual, isolated programs: use one search interface as a gateway to many others. Given a keyword and a search term (ie: gim porsche 911,) the gateway will format your search term for use in a Google Images search.
Internet Explorer supports this via its SearchUrl feature. MSN Desktop Search supports it through its Deskbar Shortcuts (community version here,) and I even wrote a small Javascript application called SearchPad to do the same. The difference is that YubNub keywords are contributed by anybody, and available to anybody.
That's a big difference.
In any case, John Ludwig recently lamented in a software roundup entry on Monad, "Wish you could plug yubnub commands into it."
Ask, and ye shall receive. The script's name is a little awkward, so you'll probably want to alias it in your custom profile:
## search-yubnub.msh
## Search yubnub from your Monad shell
## For help, use "search-yubnub ge"
## Load the System.Web assembly
[void] [Reflection.Assembly]::LoadWithPartialName("System.Web")
$url = "http://www.yubnub.org/parser/parse?command={0}" -f [System.Web.HttpUtility]::UrlEncode($args)
[Diagnostics.Process]::Start($url)
It would be technically possible to implement a "community scripting" feature that would alias keywords to community-contributed MSH scripts, but I can't think of why you would want to open your system up to that kind of threat.
[Edit: Monad has now been renamed to Windows PowerShell. This script or discussion may require slight adjustments before it applies directly to newer builds.]