stumbleupon.com
The following is a description of all the buttons and menus available on the StumbleUpon toolbar. If you do not find the answer here, you can also check out our F.A.Q.. Failing that, feel free to Contact us for assistance, or ask your fellow stumblers for help using our forum.

The Stumble Button:
Clicking the Stumble Button shows you a new great site. These pages are personalized recommendations – sites from friends and like-minded people which match your interests.
The Topic Selector:
The topic selector allows you to choose the category of your next stumble. This lets to you discover new websites related to the selected topic. Selecting "Any Topic" will show you a site within one of your stated interests - a random tour of everything you are interested in.
The Rating Buttons:
The sites you 'stumble upon' have been suggested (rated I like it!) by like-minded community members. Whenever you click 'I like it' you pass this page on to other community members. Your suggestion is automatically classified and presented to others with matching interests – in effect you share sites with members who like the same things you do.

Rating pages you 'stumble upon' gives your opinion on their quality, refining your preferences in the process. The easiest way to improve your 'stumbles' is to rate your favorite websites (whether you 'stumbled upon' them or not). This lets other people see your favorites sites, and connects you to other members who like these pages.
The Profile Button:
Clicking this button takes you to the profile of the person who suggested the page you 'stumbled upon'. This person introduced the page to the community by being the first one to say 'I like it'. When you get a great stumble this is the person to thank.
The Email Button:
Use this button to quickly email the page you are currently at to one of your friends.

Simply select their address from the list and an email will be sent letting them know about this site. This is a great way to pass on a Stumble which you know a friend would be interested in.
Website Comments Button:
Clicking this button sends you to the comments page for the website you are currently viewing. Read the opinions of other stumblers, or add your own...
My Stumblers Button:
This button takes you to a list of your friends, fans and site informants. It's also lets you view the people who have visited your profile, and send them messages.
My Profile Button:
Takes you to your profile page, a personal weblog which lets other people see the interesting websites you find. This page, which is available to anyone at http://nickname.stumbleupon.com/, can be posted to with a single click of the I like it! or Comment buttons.
Edit Info Button:
Allows you to quickly edit your profile which will be seen by other stumblers. You may upload a photo, describe your interests, and let others know what kinds of books, music and movies you like.
The Stumble Menu:

Suggested Topics: Suggests interests the toolbar thinks you might be interested in on top of the interests you have already entered on the interests page. Note that it can take up to 24 hours from the first time you use the toolbar for it to come up with suggestions.

Invite Friends: Lets your friends know about StumbleUpon. This increases the number people you share your favorite sites with (your audience size) and lets you 'stumble upon' your friends' favorite sites.

Update Interests: Takes you to the interests page where you can let the toolbar know what sorts of topics you are interested in. We have nearly 500 topics to choose from.

Top Stumblers: Takes you to the Top Stumblers page, where we feature stumblers who have contributed a large number of consistently high-quality websites to the system.

Public Forum: Lets you post comments and questions you have about StumbleUpon. Lets stumblers interact with each other, help each other out, or make suggestions.

Toolbar Options: Allows you to change the appearance and behaviour of the toolbar.

Change Current User: Allows you to access your stumble profile from another computer, or use multiple stumbleupon profiles on one computer.

Change Password: Allows you to change your password, so you may easily access your account on different computers which have the StumbleUpon Toolbar.

Stumble History: Displays a sortable list of webpages you have stumbled upon, along with their topic and stumble date. Click on the column titles to sort by that title.

My Great Sites: Displays a sortable list of webpages you have rated "I like it!", along with their topic and rating date. Click on the column titles to sort by that title.

Clear History: Clears your Great History, Stumble History, and Rating History. This may be desirable for privacy if other people are using your computer, or if your histories are getting too large. Note that clearing your history will not effect the personalization of the StumbleUpon toolbar.

Download Ad Blocking: Installs a 3rd-party program that will block banner ads and the ultra-annoying popup ad. We recommend you do this as it will increase your enjoyment of the stumble experience.

Report Illegal Content: If you find illegal content in the StumbleUpon system (copyright infringment/illegal pornography/etc...) you can report it using this menu option.

Toolbar Version: Shows you the version number and authors of the toolbar you are using. Also tells you if there is a newer version of your toolbar available, and any new features that have been added.

StumbleUpon Homepage: Brings you to our homepage.

Contact Us: Allows you to send us your questions, comments and suggestions. We will respond personally to all questions requiring a response.