How Search Engine Ranking Works?

This information will help you calculate how many clicks you can expect to get by ranking in the top Ten in Google, Yahoo, MSN or the Other Search Engines.

Want to know what it means to rank 4th in MSN? How about to rank 2nd in Yahoo? Or what about ranking 1st in Google and 3rd in MSN?

The sample size is large enough and broad enough that we can infer that this average holds true across many verticals:Results from:
 
Total Searches:9,038,794
Total Clicks: 4,926,623
Ranking Number 1 receives 42.1 percent of click throughs.
Ranking Number 2 receives 11.9 percent of click throughs.
Ranking Number 3 receives 8.5 percent of click throughs.
Ranking Number 4 receives 6.1 percent of click throughs.
Ranking Number 5 receives 4.9 percent of click throughs.
Ranking Number 6 receives 4.1 percent of click throughs.
Ranking Number 7 receives 3.4 percent of click throughs.
Ranking Number 8 receives 3.0 percent of click throughs.
Ranking Number 9 receives 2.8 percent of click throughs.
Ranking Number 10 receives 3.0 percent of click throughs.

The rest of the Long Tail (ranks 11-1000) = 11.3 percent of click throughs.
Search Engine Ranking #1: 2,075,765 clicks
Search Engine Ranking #2: 586,100 clicks = 3.5x less
Search Engine Ranking #3: 418,643 clicks = 4.9x less
Search Engine Ranking #4: 298,532 clicks = 6.9x less
Search Engine Ranking #5: 242,169 clicks = 8.5x less
Search Engine Ranking #6: 199,541 clicks = 10.4x less
Search Engine Ranking #7: 168,080 clicks = 12.3x less
Search Engine Ranking #8: 148,489 clicks = 14.0x less
Search Engine Ranking #9: 140,356 clicks = 14.8x less
Search Engine Ranking #10 147,551 clicks = 14.1x less
Search Engine Ranking 11+: 501,397 clicks

Now you may want to know the Market Share of the Search Engines Google, Yahoo, MSN and Everyone else: From Hitwise, we find:
The Search Market Share for Google: 60.2%
The Search Market Share for Yahoo: 22.5%
The Search Market Share for MSN: 11.80
The Market Share fore Everyone Else: 5.5%

 

Clickshare By Rank and Search Engine
Rank	Google	Yahoo	MSN	The Rest	Total
1	25.36%	9.48%	4.97%	2.32%	42.13%
2	7.16%	2.68%	1.40%	0.65%	11.90%
3	5.12%	1.91%	1.00%	0.47%	8.50%
4	3.65%	1.36%	0.72%	0.33%	6.06%
5	2.96%	1.11%	0.58%	0.27%	4.92%
6	2.44%	0.91%	0.48%	0.22%	4.05%
7	2.05%	0.77%	0.40%	0.19%	3.41%
8	1.81%	0.68%	0.36%	0.17%	3.01%
9	1.72%	0.64%	0.34%	0.16%	2.85%
10	1.80%	0.67%	0.35%	0.16%	2.99%

The Overture Search Tool will tell you how many searches were on Yahoo for a given term. So, weighting market share and using Yahoo as a base, and extracted an Overture multiplier and created the Expected Clicks By Rank in Google, Yahoo, MSN and Other Tool.
So let’s take something no one is searching for – something like “Free Porn” and look in the overture keyword selector tool. We find that 1,988,094 people searched for “Free Porn” last month in Yahoo. By using the “Expected Clicks By Rank in Google, Yahoo, MSN and Other Tool”, we can extrapolate that you can expect the following number of clicks based on rank:

Expected Clicks by Ranking For "Free Porn"
Rank	Google	Yahoo	MSN	The Rest
1	2,241,196	837,656	439,304	204,760
2	632,810	236,515	124,039	57,815
3	452,007	168,940	88,599	41,296
4	322,324	120,470	63,180	29,448
5	261,469	97,725	51,251	23,888
6	215,444	80,523	42,230	19,683
7	181,475	67,827	35,572	16,580
8	160,323	59,921	31,425	14,647
9	151,542	56,639	29,704	13,845
10	159,310	59,543	31,227	14,555

collected from the virtual world. may be authentic it is?