needed?

is it completely neccisary

[natty]

hi all,

i understand this is to direct the crawlers/spiders to only crawl certain pages in your site.

what is the advantage of this..?
ium not sure i want to stop any of the pages being crawled..
presumably this depends on quite what content and pages i have on offer..
could someone explain a little..
many thanks

n

[KS_Katz]

If you have no pages that you want to exclude, the only thing a robots.txt file will stop is 404 errors from the spiders. (Not a big deal IMO)

[PCInk]

You can block certain spiders altogether that you may not want to crawl your site. (For example, foreign search engines or image spiders - such as Google's image). This can save bandwidth, particularly if you have a lot of pages or large images.