What would you want in a new toolbar?

Just been approached by a client

[dataguy]

I have a client that runs a search engine site and he already offers an IE browser toolbar, but he wants to add some features to it to make it more enticing for his site users to install.

There are a few features that I can think of, but I would like to open it up for suggestions here. (And the popup blocker thing has been overdone!)

What features would a new toolbar have to have to make you want to install it?

Thanks!

[john_k]

When I uninstall it, it cleans up after itself and it stays uninstalled.

[drbrain]

Support for the link [w3.org] element.

*Especially* useful for surfing, err, image galleries if done right. See the linkToolbar Firefox extension for a good implementation of this.

[dataguy]

"When I uninstall it, it cleans up after itself and it stays uninstalled."

Does that...

[robotsdobetter]

Yeah, I agree with you john_k! I get so sick-n-tired of having to clean up after these toolbars! When I uninstall something it means I don't want it!

I would like it to take little as possible MBs as well.

[kodaks]

A highlighter feature, where a user could type into the searchbox, and click a highlight button, and it would find that word or phrase in the page.