News: a couple of useful tips for guitar bloggers and guitar web master

Is there a good way to kick off a feed in Google Reader by doing something like temporarily making the feed include a whole bunch of old content? Is it desirable to do something like that?

What's a good way to kick off a new RSS feed?

It seems that having relevant keywords in URLs is
very helpful. Does Google give higher importance
to keywords in the path vs filename?

Is it better to have keywords in the URL path or filename?