What is the most standard subnet length on internet

[nanog at daork.net (Nathan Ward)]

On 23/12/2008, at 2:39 PM, Joe Provo wrote:

> On Tue, Dec 23, 2008 at 02:34:39PM +1300, Nathan Ward wrote:
> [snip]
>> Let me rephrase; Are there people who are filtering /24s received  
>> from
>> eBGP peers who do not have a default route?
>
> of course.


Curiously, it was really meant as a rhetorical question where the  
answer was "no".

Why are people doing this? Are they lacking clue, or, is there some  
reasonable purpose?

--
Nathan Ward