Which search engine do you use most and why? I know that most of your answers will contain google.com but if you are using others then also mention them and the benefits of it.

I personally use google, msn, yahoo and mamma.com

Google for checking stats and status of my sites and doing the research as a webmaster.
MSN to find the things that I cannot find from google.
Yahoo just to see if I am listed in it or not.
Mamma.com as it only shows some pages not on and on and on.

I do use Google.com, Yahoo.com, MSN.com

Google for most of the queries.
Yahoo.com for the content based queries.
MSN - rarely.
Ask.com, Lycos and AOL for tracking my sites and their listings.

i am not so good at searching but still i use google.com and yahoo
google.com most of the times and the default search engine on my PC is yahoo so it does searches if i write some wrong website name or something.

i am almost the same as nick!!
Although i use google's webmaster tools a lot!!

Google and only Google, I guess because I am lazy.
If I don't find what I want, I work on refining my search terms rather than going to another engine.

A long time ago I only searched on Altavista and Netscape!

I use Google for every type of search. If a website no longer available, I use its cache and the Internet Archive to look it up.

I use only google, i go for MSN and yahoo when i did not get ranking on google for long time lol. and i check yahoo for back links of my competitor.