As you know you can keep only one website as a homepage at a time and it is your personal matter which website to use as a homepage or do not use any website keep it blank. Most of users keep a website as homepage and do not keep a blank page.
If you do not keep any website as a homepage in your browser there should be reason for or if you keep a site as a homepage there also should be reason for.
I have set blank page as my homepage. There is a reason for it, I have very slow Internet connection and a blank page loads faster than Google.
Mostly people take care of these things before choosing a homepage:
Website should be very simple and clear (this reason can be apply for thousands of websites, I am not talking about them)
Website should be full of information like news, music, pictures etc.
They look for their interest; it depends on what they are or what they like to be.
Now which website you should use a homepage in your browser, I have chosen some of. This list can be controversial.
Google.com
Google is top website and it is a search engine if you like to search information on the web (if you search something on Google you do not search the web, you search only Google), it has a very simple, clear and the fastest website of the web. Most of people use Google as homepage.
Bing.com
Bing is a new search engine from Microsoft to compete with Google, Bing is a good search engine, I use Google for search but if you want to try other than Google, you can sue it.
Facebook.com
If you are social media junky, Facebook is second largest website of the web, it also has a very lite page until you login.
Twitter.com
Twitter is most famous microblogging site; it was suggested for Nobel Prize also. If you like Twitter most you will be using it as your homepage.
Yahoo.com
Yahoo is portal; here you can find news, music, video, email checking etc, so many people use it as homepage.
Yourowndomain
If you have a website, you should be using it as your homepage, you love you’re your website, there is nothing wrong.
Digg.com
It is also a very good news source, it also can be used a homepage, it is user driven data site, people submit news and if it get famous it get published on homepage of dig.
YouTube.com
It is world’s largest video sharing site and it is world’s third largest of all sites. If you like YouTube and videos you should be using it as your homepage. It is owned by Google.
Flickr.com
This is world most famous website for picture sharing, if you are an artist or like to share and see graphics and picture you can use it as your homepage. It is owned by Yahoo.
Thepiratebay.org
It is most famous website for searching torrents, if you like to search and download torrents you can set it as your homepage. It is also very simple and efficient.
I know there are so many websites that can used as a homepage in your browser, I have suggested 10 but you can suggest more.

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I think you can set multiple homepages to open in several tabs especially in most web browsers nowadays. Well, with a slower computer maybe you should just stick with one homepage or even a blank one.
.-= Vladimir´s last blog ..Studio XPS 16 Throttling =-.
Great!
Why would someone need twitter as homepage? When real twitter users use third party application to tweet rather than using twitter home page.
I do not know if they are real users.