Andre,

I'm positive there is a limit, I just haven't reached it, nor has it been reported.

However, "time" seems to be the "limiter", more than quantity....By this I mean some RSS sources are very slow and The Newz Tuel can only update as quickly as the RSS sources can deliver the pheeds.

For example, if Daypop hangs, then that will obviously slow down The Newz Tuel.

With this said, I believe it is far better for your PC to be slow, than for the "hanging" to occur server-side, where you pages (and revenue) are located...And the "hanging" is dependant on the resource, not the program used to collect the pheeds, such as BlogBomb or The Newz Tuel.