The toolbar features a popup blocker (with whitelist configuration), google and sedo search, domain name checker, a login manager, an email checker, internet archive lookup, whois search, autofill (with configuration options), instant bookmarking (Del.icio.us, Digg, Furl, Ma.gnolia, Newsvine, Reddit, StumbleUpon and Technorati options), links to useful sites (forums, news, parking programs) and the IE version has an RSS reader (fully configurable) including relevant domain name feeds to get you started!
Rest assured the toolbar doesn't contain any adware, spyware or malware of any kind, and doesn't track any user information. Hope you enjoy using it!