engine - 9:37 pm on Mar 6, 2001 (gmt 0)
I always build with tags for those services that read the tags. Those that don't, no worries.
As mentioned above, site content is the key to build a site theme - not the meta tags on their own.
Agreed on the autosubmissons - I wouldn't bother with those services. It won't take long for you to deal with the top ten services manually.