One large, merged, RSS feed or several individual feeds?
I am in the process of developing a feed to kb.se. We have many (100s) of Wordpress sites. New sites are being added every month.
Would it be best if we generated a single feed that combined everything, from all blogs for last 24 hours, or would it be better to submit a new RSS feed when a site is created?
Is there an API where new sites can be registered when they are created within our system?