Yahoo Bot Crawl Delay: Any harm?

Hello,

we still have ~400 Yahoo Bots online at our site, which generally spoken is a good thing.
Even with their new Bot recently relaunched we have that many bots online.

But the performance impact is noticable, so we think of placing a crawl delay for the bot in our robots.txt, see:
Yahoo! Help -
We think of

Code:

User-agent: Slurp
Crawl-delay: 5

Will that do any harm SEO-wise?

Will it help reducing the queries of Y Bot to reduce our server's load?
I guess so...

Thanks,
Lian

Found it:

Setting a crawl-delay may limit the coverage and freshness of your content representation in Yahoo! search results. If you do feel that a crawl-delay is necessary, use small values to avoid blocking Slurp discovery and refresh of your key content.

Nope, we surely don't want that.

FYI Yahoo released a new version of Slurp. It's supported to be more efficient in crawling and aims to reduce bandwidth consumption (and performance impact):

http://www.vbseo.com/f104/yahoo-slur...released-6588/

Thanks, I've read the thread.

I wonder why we still have ~400 online during (bot) peak times...