Which are the most visited non-polluted search engines?

Which remain search engines don't have PPC ads?

[litmania]

Which are the remaining search engines in which you can obtain first of second-place ranking of a commercial site for 'free'?

Now that MSN has started including Overture listings as well, just out of interest, I was wondering if anybody knew which the most popular remaining search engines/directories were which didn't include any ghastly, intrusive PPC listings. I'd exclude Google's Adwords, because that is tastefully done and is not intrusive.

1. Google

2. Altavista (?)

3. Dmoz

...

The rest, I don't know... doesn't look good, as MOST of the biggies now have Overture ads :(

[Brett_Tabke]

1 ODP ;)
2 Google
3 Fast/AllTheWeb
4 Alta