Sorry everyone ! I really use tag [*IMG]
http://my image link[/img*]
I don't know why it not show up in my post ! Please tell me why !
It's because you're still a newbie. On bitcointalk, there are multiple ranks. Once you've gained enough activity you level up to the next rank. By reaching higher ranks, certain features will be unlocked. You have to be a Member (60 activity) to be able to post images.
You can also choose to use a faster method: Paying a small fee to get the Member perks without having to post actively for 2 months.
Check out this thread for more information on activity:
https://bitcointalk.org/index.php?topic=237597.0