Google claims that
by carefully editing the content in <meta name=”keywords”> and <meta
name=”description”>, the page itself will be easier crawled by Google, and
have a better possibility be ranked higher than those pages without or mis-edit
these 2 meta information. Among 225 URLs, not all of them have meta information
and some of them only have those 2 meta tags but leave the tags value blank.
After picking the pages which have both <meta> information, there are 80
URLs qualified and the experiments are designed as follows: start from the
first term in <meta> tag’s text and pick terms range from 3 to 15.
|
Meta Keywords
|
Google
|
Yahoo
|
|
3
|
6.00
|
7.50%
|
4.00
|
5.00%
|
|
4
|
7.00
|
8.75%
|
5.00
|
6.25%
|
|
5
|
7.00
|
8.75%
|
7.00
|
8.75%
|
|
6
|
7.00
|
8.75%
|
7.00
|
8.75%
|
|
7
|
7.00
|
8.75%
|
8.00
|
10.00%
|
|
8
|
9.00
|
11.25%
|
10.00
|
12.50%
|
|
9
|
17.00
|
21.25%
|
12.00
|
15.00%
|
|
10
|
17.00
|
21.25%
|
18.00
|
22.50%
|
|
11
|
16.00
|
20.00%
|
19.00
|
23.75%
|
|
12
|
18.00
|
22.50%
|
22.00
|
27.50%
|
|
13
|
19.00
|
23.75%
|
23.00
|
28.75%
|
|
14
|
19.00
|
23.75%
|
24.00
|
30.00%
|
|
15
|
19.00
|
23.75%
|
23.00
|
28.75%
|
|
Average
|
12.92
|
16.15%
|
14.00
|
17.50%
|
Table4.12
(a) (b)
Figure4.13 Meta Key from
Google and Yahoo web search results
|
Meta Description
|
Google
|
Yahoo
|
|
3
|
3.00
|
3.75%
|
4.00
|
5.00%
|
|
4
|
7.00
|
8.75%
|
15.00
|
18.75%
|
|
5
|
8.00
|
10.00%
|
18.00
|
22.50%
|
|
6
|
8.00
|
10.00%
|
20.00
|
25.00%
|
|
7
|
8.00
|
10.00%
|
23.00
|
28.75%
|
|
8
|
7.00
|
8.75%
|
26.00
|
32.50%
|
|
9
|
7.00
|
8.75%
|
27.00
|
33.75%
|
|
10
|
7.00
|
8.75%
|
27.00
|
33.75%
|
|
11
|
8.00
|
10.00%
|
28.00
|
35.00%
|
|
12
|
8.00
|
10.00%
|
26.00
|
32.50%
|
|
13
|
9.00
|
11.25%
|
26.00
|
32.50%
|
|
14
|
8.00
|
10.00%
|
26.00
|
32.50%
|
|
15
|
8.00
|
10.00%
|
27.00
|
33.75%
|
|
Average
|
7.38
|
9.23%
|
22.53
|
28.17%
|
Table4.13
(a) (b)
Figure4.14 Meta Description
from Google and Yahoo web search results
|
|
Title
|
Meta Keywords
|
MetaDescription
|
|
3
|
11.00
|
13.75%
|
6.00
|
7.50%
|
3.00
|
3.75%
|
|
4
|
15.00
|
18.75%
|
7.00
|
8.75%
|
7.00
|
8.75%
|
|
5
|
29.00
|
36.25%
|
7.00
|
8.75%
|
8.00
|
10.00%
|
|
6
|
32.00
|
40.00%
|
7.00
|
8.75%
|
8.00
|
10.00%
|
|
7
|
32.00
|
40.00%
|
7.00
|
8.75%
|
8.00
|
10.00%
|
|
8
|
31.00
|
38.75%
|
9.00
|
11.25%
|
7.00
|
8.75%
|
|
9
|
31.00
|
38.75%
|
17.00
|
21.25%
|
7.00
|
8.75%
|
|
10
|
31.00
|
38.75%
|
17.00
|
21.25%
|
7.00
|
8.75%
|
|
11
|
31.00
|
38.75%
|
16.00
|
20.00%
|
8.00
|
10.00%
|
|
12
|
33.00
|
41.25%
|
18.00
|
22.50%
|
8.00
|
10.00%
|
|
13
|
35.00
|
43.75%
|
19.00
|
23.75%
|
9.00
|
11.25%
|
|
14
|
44.00
|
55.00%
|
19.00
|
23.75%
|
8.00
|
10.00%
|
|
15
|
44.00
|
55.00%
|
19.00
|
23.75%
|
8.00
|
10.00%
|
|
Average
|
30.69
|
38.37%
|
12.92
|
16.15%
|
7.38
|
9.23%
|
Table4.14
(a) (b)
Figure4.15 Title, Meta Key and Description results comparison
from Google web search
|
|
Title
|
|
Meta Keywords
|
Meta Description
|
|
3
|
12.00
|
15.00%
|
5.00
|
6.25%
|
15.00
|
18.75%
|
|
4
|
19.00
|
23.75%
|
7.00
|
8.75%
|
18.00
|
22.50%
|
|
5
|
21.00
|
26.25%
|
7.00
|
8.75%
|
20.00
|
25.00%
|
|
6
|
21.00
|
26.25%
|
8.00
|
10.00%
|
23.00
|
28.75%
|
|
7
|
21.00
|
26.25%
|
10.00
|
12.50%
|
26.00
|
32.50%
|
|
8
|
21.00
|
26.25%
|
12.00
|
15.00%
|
27.00
|
33.75%
|
|
9
|
21.00
|
26.25%
|
18.00
|
22.50%
|
27.00
|
33.75%
|
|
10
|
21.00
|
26.25%
|
19.00
|
23.75%
|
28.00
|
35.00%
|
|
11
|
20.00
|
25.00%
|
22.00
|
27.50%
|
26.00
|
32.50%
|
|
12
|
21.00
|
26.25%
|
23.00
|
28.75%
|
26.00
|
32.50%
|
|
13
|
29.00
|
36.25%
|
24.00
|
30.00%
|
26.00
|
32.50%
|
|
15
|
31.00
|
38.75%
|
23.00
|
28.75%
|
27.00
|
33.75%
|
|
Average
|
19.85
|
24.81%
|
13.69231
|
17.12%
|
22.23
|
27.79%
|
Table4.15
(a) (b)
Figure4.16 Title, Meta Key and Description results comparison
from Yahoo web search
The results from
meta information are lower than 40% ranging from all query words number’s
length. In Figure4.13, meta key words method has success
retrieval rate from 5% to 30%. The results from meta description words show the
different performances between Google and Yahoo, in Figure4.14 Google’s results even barely touch 10%,
which is 9.23% on average, but Yahoo’s results are around 30% when the query
words number exceeds 10.