Have anyone ever typed wwww.yahoo.com on your browser? What do you see? It doesn't work when I type wwww.msn.com . How do they (yahoo) do that?

I'd guess they may have it set up as a subdomain? Look where it winds up...

Tracing route to wwww.yahoo.com [216.115.109.7]

1 43 ms 27 ms 14 ms codebrain.1
2 37 ms 23 ms 35 ms codebrain.2
3 48 ms 28 ms 12 ms codebrain.3
4 49 ms 80 ms 36 ms codebrain.4
5 27 ms 10 ms 11 ms codebrain.5
6 136 ms 38 ms 14 ms 208.51.134.13
7 50 ms 21 ms 21 ms pos6-0-2488M.cr2.NYC2.gblx.net [208.48.234.213]
8 121 ms 79 ms 96 ms pos7-0-2488M.cr2.SNV.gblx.net [208.50.169.86]
9 82 ms 72 ms 78 ms ge1-0-1000M.hr8.SNV.gblx.net [206.132.254.41]
10 78 ms 75 ms 75 ms 208.178.22.58
11 166 ms 76 ms 91 ms rc.yahoo.com [216.115.109.7]

Nam: I get a message saying it was invalid and link to the valid one.

Yes, they probably set that up specifically for users with typos. I'd be ww.yahoo.com did the same thing.

see the different result between http://quote.yahoo.com/ and http://quotes.yahoo.com/

I guess that they see in fact there are lot of people mistyping their url addresses.

So they setting their server(s) like that.

Yeah right, w.yahoo.com does the same thing, but not wwwww.yahoo.com :D, guess nobody would make that type. By the way, does that mean I can get ww.sex.com?

You could ask them, but somehow I don't think so :)

I don't know about the ww.sex.com part; but catching the typos is kind of a neat idea.

Wasn't there a company a while ago that tried to capitalize on typographical errors in the entry of major site names by registering common misspellings (like http://www.mircosoft.com , for example) then slagging them all to an advertising page?

Simple.

Add a record to the DNS.

* (wilcard) to direct to a certain IP that handles all errors. Using a CGI read the host header and print the page.

The same thing is with http://www.yahooo.com ;)

That's actually registered...

WHOIS: YAHOOO.com

Registrant:
Yahoo Inc. (YAHOOO6-DOM)
3420 Central Expressway
Santa Clara, CA 95051
Domain Name: YAHOOO.COM
Administrative Contact, Technical Contact, Billing Contact:
Hanley, John P (JPH17) not-abuse@YAHOO-INC.COM
Yahoo
3420 Central Expressway
Santa Clara, CA 95051
+1 408 530 5062
Record last updated on 18-Jul-2000.
Record expires on 28-Jan-2001.
Record created on 28-Jan-1999.
Database last updated on 15-Jan-2001 11:29:39 EST.
Domain servers in listed order:
NS1.YAHOO.COM 204.71.200.33
NS2.DCA.YAHOO.COM 209.143.200

By the way, anyone know what a not-abuse address is... lol... as in not-abuse@YAHOO-INC.com -- ?