When can I start using HTML5 and CSS3

I remember back in the uni days (that’s going back a few years to mention the least), people were speaking about CSS3 and HTML5. Some where even going as far to mention that it will become a standard in 2 years maximum. That was in 2004-2005, I feel we are closer, but how close?

There are quite a few elaborate threads with this question already. To start with:

http://www.sitepoint.com/forums/showthread.php?t=638786

You may also want to take a look at this website: http://caniuse.com/

Thread closed.