Having another site linked to yours is almost vital
when it comes to getting your site indexed.
Some search engines wont even consider your site
if there is not at least one outside link pointing to it. If you
have to, have someone that owns an indexed site place a hidden link
to your site.
Having
a link point to your site also helps in getting spider traffic.
If the site that has a link to yours is already indexed, you will
also receive a visit from the spiders that visit their site. This
is a really fast way to get indexed.