You can restrict what kind of results are shown in the drop down list by using customizable characters. Include the character anywhere in the address bar separated by spaces to have it restrict what results are displayed. The characters are as follows:
Preference names in about:config default key action
browser.urlbar.match.title # Returns results that match the text in the title.
browser.urlbar.match.url @ Returns results that match the text in the URL.
browser.urlbar.restrict.bookmark * Returns only results that are from the bookmarks.
browser.urlbar.restrict.history ^ Returns only results that are from the browser's history.
browser.urlbar.restrict.tag + Returns only results that have been tagged.
browser.urlbar.restrict.typed ~ Returns only results that have been typed.
Poyozo is an automatic, personal diary system to help reclaim and consolidate your ever-expanding digital life with simple visualizations that you can use every day.
Poyozo gives you your own data back by downloading the information you're currently giving to the web on to your own computer. You can opt-in to importing your data from Facebook, Twitter, Foursquare, Last.fm, Google Calendar, any email service, any RSS feed, Flickr, Wesabe, Listit, Skydeck, Dopplr, your Firefox browsing history, the local weather, and your location, allowing you to access all of this personal data as easily as the companies that run these services can.
inline YouTube, Flickr, TwitPic, Google Maps, song.ly, and all sorts of playable/viewable media
-link expansion
-link translation to page titles
-search scoped to a specific user
-status history peeking on mouseover
-Facebook status updates
-custom settings
-@mentions of friends on profile pages
-photo uploading
-link shrinking
-#dailyquestion