Enhanced search box, SpellCheck, Word Translation, SendTo feature...
New in v5.x.x: No information available at this time; Release Notes - Last Updated: 02.14.08 (v5.0.1112.7760 Beta Release)
Upgrade Meter:3
New in v4.0.x: Ability to add buttons to the toolbar for searching your favorite sites, enhanced search box (instant suggestions, spelling corrections, and history as you type), Safe Browsing feature (receive warnings about Web pages that may be unsafe), custom buttons (with button gallery to help you design your own buttons), online bookmarks feature (that you can use on different computers), SendTo feature (for sharing web pages via email, text message (SMS), or blog), sign in to your Google Account directly from the toolbar; Release Notes - Last Updated: 06.08.07 (v4.0.1602.1060)
Upgrade Meter:5
New in v3.0.x: Search your own computer from the Google Toolbar with Google Desktop Search Button (requires Google Desktop Search to be installed), SpellCheck (checks your spelling whenever you type in Web forms), WordTranslator (translates English words into other languages), and AutoLink (Turns US street addresses into links to online maps); Release Notes - Last Updated: 11.17.05 (v3.0.128.1)
Upgrade Meter:4
Pros: Quick access to Google, Froogle, and similar Google-related search sites; solid ad pop-up blocking capabilities, extensive customization options
Cons: Requires IE 5.5+ (no versions available for Mozilla Firefox or other browsers), AutoFill form fill tool only works for a single user (as opposed to MSN's toolbar, which supports information for multiple users)
