hi,
our site (www.netzetera.lu) has been added on a list showing at
"http://www.telethon.lu/organisation.htm" and a few days later when
entering the searchterm "netzetera" in google this link was already
showing.
(means the telethon site was listed in google showing netzetera)
How is it possible that google is indexing this that fast ?

tks

Hello 2fromnz-g,

If the telethon website was just updated with your details just before
a Googlebot spider crawl, it would have indexed the page and found
it's way into the search data. The 'revisit' meta tag might have
influenced the timing of the Googlebot spider visit to their site
Details of refresh meta tag here on submitcorner.com
http://www.submitcorner.com/Guide/Meta/revisit.shtml 

I had a site too that was entered into the Google listings in a couple
of days.

This thread from Webmasterworld.com also makes interesting reading on
the subject:
'Google daily re-indexing!'
http://www.webmasterworld.com/forum3/4879.htm


Search Strategy:
meta tags revisit
://www.google.com/search?hl=en&ie=ISO-8859-1&q=meta+tags+revisit
google indexing OR indexes frequency 
://www.google.com/search?hl=en&lr=&ie=ISO-8859-1&c2coff=1&q=google+indexing+OR+indexes+frequency+

I hope that helps, if you need any clarification of the answer just
ask.
Kind regards
lot-ga