Obviously content farms are looked down on Google, but I'm thinking of creating a RSS aggregator page for a specific niche, say Tennis and then building an iPhone for that niche.

I'm interested in other Warriors who might have done this kind of thing in the past.

Specifically, dealing with loads on the server; I'm not sure what the best way to approach this would be.

I'm thinking the best way to do this is cache the website and refresh the feed data once every hour via cronjob; or perhaps only make it an iPhone exclusive product, but even so the data/feed would need still need to be staggered/cached in some way.

Anyway, I'd appreciate your help.

Thanks