You were tempted by "my fun cards" and installed "my web search" on your computer. Although some people say "my web search" is harmless, but still it behaved scary. So you want to uninstall it. You click the "Add/Remove Programs" and removed the "my web search" toolbar.

But then when you type in things in the Firefox address bar you find that it still brings up "my web search"!

Here's how to get rid of it:

1. Enter "about:config" in the address bar (and promise that you'll be careful).
   
2. Enter "myweb" in the filter box
   
   
3. Reset browser.search.selectedEngine and keyword.URL, extensions.mywebsearch.openSearchURL, extensions.mywebsearch.prevKwdEnabled, and extensions.mywebsearch.prevKwdURL.
   
4. The extensions.mywebsearch.* settings will be removed after Firefox restart.
   

The parameter that affects the address bar search is keyword.URL. See mozillaZine About:config entries for details.

Other references:

• How I Fixed my Hijacked Firefox from MyWebSearch Spyware!
  
• MyWebSearch Hijacked Firefox on Mac? Here's how to remove it