Each search engine seems to produce different results. Google, Bing, Yahoo.

I tried a quick search recently using all three. The goal of my search was Vorotinschtina, a small agricultural colony established in the 1830s, adjacent to the hamlet of Zaverezhye, about 12 miles southwest of Mogilev, Belarus.

Vorotinshtina, Belarus
53' 50" N 30'03" E
101 mi E of Minsk
Vorotinshtina [Yid], Vorotinschtina, Worotyńszczyzna [Pol], Vorotinschtina-Zaverezhye

Zaverezh'ye, Belarus
53'50" N 30'03" E
101 mi E of Minsk
Zaverezh'ye [Rus], Zaverezhye

Results for each set of results pulled items from FamilyTreeDNA.com, JewishGen, blog posts from MyHeritage Genealogy Blog and Tracing the Tribe blog, YNetNews, Jerusalem Post.

Bing produced 14 results. and did not seem to pick up on many blog posts.

Google returned 102 hits, many were duplicates, leaving 28 "real" ones, and one in Spanish.

Yahoo offered 42.

As another simple test of all three, I decided to search for myself to see what numbers each would pick up. I used "schelly talalay dardashti" as the search parameter to limit it to myself and skip mentions of cousins in both families, etc.

Bing 4,520 (but could not click on results higher than 450).
Google 7,940
Yahoo: 7,340, including Facebook

Closer to home, decided to see where and how MyHeritage.com's new Family Tree Builder 4 fared. Here are the results for "MyHeritage.com Family Tree Builder 4.0" -

Bing: 1,970
Google: 66,400
Yahoo: 17,800

Results for "MyHeritage.com" without FTB 4.0:

Bing: 88,700
Google: 2,670,000
Yahoo: 75,800

There are some other sites coming down the road, such as Yebul/Yabul and Kosmix.