Google finished rolling out their click-to-call functionality on Google Maps today, but after reading an article on Valleywag about how to prank call other people with the service, I got thinking about how else the service could be abused.  Although it's almost certainly against the terms and conditions, the new feature could theoretically allow users

So, now that you’ve (a) provisioned a Live Search Box for your site, and (b) updated it with a cool look and feel, you are finally ready to build the search query of your dreams.
Back in the old days, search boxes generally gave you two options: (1) search the whole Web or (2) search only your site

We’ve just posted an article on dev.live.com that looks at a few simple hacks you can do with the Live Search Box, to change its look and feel. You can use these hacks to make the search box fit better into the design of your site. List of hacks:

Applying the Windows Live styling to the basic search box
Adding default text to the search box
Auto-selecting the search box when the page loads
Ensuring compatibility with ActiveX and other smart objects
But this is really only the beginning of what you can do