1. HTML5 & CSS3 standards are open so you don’t rely on the whims of one company.
2. Big websites like YouTube are already getting into the game (check out YouTube HTML5 Video Player) so you can bet the demand for HTML5 skills is going to rise.
3. You don’t need to buy a proprietary software so you can easily code HTML5 & CSS3 on your laptop, your roommate’s computer and your mum’s computer.
4. The iPad doesn’t support Flash. While you might disagree with Apple’s choice, this is the choice they made and the iPad is going to foster a new range of interactive websites – all those made with HTML5 and CSS3. Do you want in or do you want out?
5. The current big battle is Google vs Apple (Microsoft seems to have lost the race). They are both committed to HTML5 so even if one wins and the other one gets swallowed up, HTML5 will still be supported.
Disagree? Write a “Top 5 reasons to stick to Flash” and I’ll link to it here 
1. Flash (and Flex framework) open too.
2. Sites uses flash – much, much more.
3. With flash you also dont need buy software, code in notepad if you like it. I suggest you use “notepad” on ur mum’s computer
4. iPad dont support Flash, but who support HTML5/CSS – nobody. In 2012 it may be supported (so, now it still can’t be used), but how much users will still use IE 6,7,8 installed??? Win XP not support IE-9. Do you want to loose all this users (winxp + IE users)?
For now, Flash supports much, much more features than HTML5 will support in 2012. So, use it and habe a fun, or wait for 2012 and be ready to become a javaschipt hihja with ability to fix MANY bugs with different browsers ahd html5.
Comment by Aleksey — June 18, 2010 @ 2:38 pm