Specifically, from December to January, Mozilla stayed flat at 22.8 percent, Chrome rose from 10 percent to 10.7, Safari rose from 5.9 percent to 6.3 percent, and Opera rose from 2.2 percent to 2.3 percent.
Read more: http://news.cnet.com/8301-30685_3-20030176-264.html?tag=contentMain;contentBody
Looks like Internet Explorer is on a steady decline. Internet Explorer 9 may change this though. Chrome seems like it is making a strong run. Wonder what a year from now will look like?
I like Chrome because the great synchronization’s that it have(and other features). But it can be improved in the installation size. I leave Firefox 1 year and half. Opera is another great browser, but I had problems with some pages that it leave missing links within a page. Opera would be far better than whatever browser if it not fail these links and other minor problems. (like some incompatibility in web pages)
Those problems arise because some websites are not designed for opera web browser viewing.
CHROME rocks
OPERA is not meant for dial up connections
I like IE9 and a new release is due Feb. 10th from what I have read.
Explorer 9 Event
http://www.pcmag.com/article2/0,2817,2376883,00.asp
No Opera for me. 
I have used Opera (v11) for a couple of weeks. But I return to Chrome because the incompatibility issues with some web sites. Really that Chrome is the browser that fits to my web needs and the omnibox is really addictive, including other features.
IE is my second option. I’m tired of long Mozilla.
Opera works just fine for me on dial-up. It is certainly faster than IE in my case.
Back when I didn’t like Opera I had to admit Opera was best for dial-up.
I got fed up Firefox and went back to Opera.
After spending more time with Opera I discovered Opera is the best browser.
Recently I made Google Chrome my default browser due to a bug in Opera.
It seems the bug has been fixed in Opera 11.1.
I’m very happy to be back with Opera. 
There is no substitute for Opera!
Safari has issues in the latest release when you have multiple windows open each with multiple tabs. I’ve recently been trying out Camino, a browser based on Firefox with a OS X native interface. So far ive been really impressed.
I am was a long term user of opera. but finally I had enough of the incompatibility with yahoo mail (links missing, errors on login). never liked firefox (too slow, being used to opera), so I switched to chrome (which has it’s downpoints) but is great.
I’ve never had any of those problems with Opera.
Maybe your problems aren’t with Opera, but are due to some other cause ???
chrome chrome only chrome
The problem lies in Yahoo for designing their websites only for big name browser (IE, Firefox, and Safari), that’s why you got error message on login using Opera. It’s not Opera’s fault.
I always use Firefox or IE for these kind of websites (MSN, Yahoo, CNET, etc)