1. How recent is the google cache?
You can easy make a "cache:url" search on google. You should get
something like: This is G o o g l e's cache of http://dmoz.org/
as
retrieved on 12 Dec 2006 13:33:43 GMT. If the date of cached
page is
older than 15 days, then the page is not frequently crawled therefore it
is not important enough so you should not submit, specially if you were
thinking about a paid submission.
2. Where is the link placed in a backlink search for sites which are
already included?
Go to your category, and check on what position is the link placed on
a search like: "link:url" - on google or "linkdomain:url" - on Altavista
for a site which is already included. If
you find it in the first pages(results), then it is considered an
important link.
If you find it in the last pages or don't find it at all, then either
the
site was very recently included or the directory is unimportant. (For
this test you should rely more on altavista linkdomain results, since
google does not update the backlink database very often)
