Even Scoble has cut back on the scope of his reading:

I've noticed something. I haven't been reading my feeds very regularly for the past couple of weeks. I feel more ignorant. But I'm happier. The neat thing is that my aggregator continues to gather weblog posts and whenever I have time, I can read a feed or two. But not putting the pressure on myself to read 1,300+ feeds every night sure is making life more enjoyable.

I always thought 1300 feeds sounded like too many - but I'm sure the amount you can read varies by person (and the level of other responsibilities). For me, I've noticed that I start to feel overloaded every time I get near 300 feeds. I've been holding at just under 270 for a few weeks now.