I integrated now gzip compression to Popoon and therefore all our

Blogs and CMS installation, which use the caching module of Popoon.

This should approx. half the bandwidth needed by for example Planet PHP.

Even if Planet PHP isn't using that much bandwidth currently,  if it

continues to grow at the same rate, we better implement all those

bandwidth saving features already now. Next thing would be the RFC3229 + “feed” method, but that won't happen very soon ;) And for those wondering, Planet PHP peaks currently at 3100 visitors per day.

This brings me of course to my favorite subject lately: RSS

scalability and why RSS – as we know it – is flawed 
 Bob Wyman of PubSub.com wrote an interesting article about that topic

(some months ago
). IMHO, if there's not soon a widespread supported

new way of pushing RSS feeds, instead of constantly pulling them,

some of the big content providers will cut-down their RSS feed in such

a way, that it's of limited use. Today a very little percentage of

Web-users is using RSS, but some big sites are already fighting the

problems associated with it. Imagine, if RSS-polling becomes as widely

used as email or IM or whatnot