site description not visible in google results

my meta description is not visible in google results

[pepijn]

my meta description is not visible in google results, why is that? only my url is visible other sites have also a meta description tag and the content is shown in the google results

it is shown as this:

example.com/
[word1 word2]

and i like to see:

example.com/
bla bla bla bla bla bla bla bla bla bla
bla blabla blabla bla
[word1 word2]

[word1 word2]

[edited by: ciml at 8:04 pm (utc) on Jan. 9, 2005]
[edit reason] Examplified [/edit]