How to make URL like on other forum

[digif]

Default url is unreadable, but watch on this forum - http://www.v7n.com/forums/tech-support-forum/172139-opera-10-50-faster-than-chrome.html

Is this better for google, yahoo, bing and other bots?

How can I make this on my forum?

[Speysider]

You will need to either pay for vBSEO, or get one of the free SEO mods on vBulletin.org

If you don't know what SEO is or what those links are, don't attempt to change your links.

[digif]

I know what SEO is, can you give me link to SEF plugin, or some other free plugins for this..