Thank you for your answers.
1. Please elaborate about media BBcode
If I understand this for example If I want to embed youtube videos
I have to write a BBcode for youtube and when I want to embed I have to type something like [youtube] www.youtube.com/v=..xxxxx [/youtube]
or I just paste the youtube link and its all done?
2. Please tell me the name of bump thread plugin or the link to it.
I searched through plugin store and couldn't find one.