Before concerning specific links I
want to discuss about back links. Incoming link on site called back link or inbound
links. These back links help us to improve web page
ranking in search engine. Most of webmasters try to make back link on .edu
sites. Back link with these sites is more essential for website ranking.
Google and even other search engines
consider trusted website to those websites which are with .edu extension. Because
of trusted extension every webmasters find more and more .edu websites and
create back links on those sites. So we can say back links with .edu sites can
boost our keywords ranking.
S.No
|
Website URL
|
PR
|
Alexa Rank
|
1
|
6
|
31178
|
|
2
|
3
|
9020
|
|
3
|
3
|
97157
|
|
4
|
7
|
7645
|
|
5
|
3
|
7500
|
|
6
|
3
|
34403
|
|
7
|
3
|
29364
|
|
8
|
6
|
44172
|
|
9
|
4
|
84614
|
|
10
|
5
|
63082
|
|
11
|
6
|
75715
|
|
12
|
3
|
962411
|
|
13
|
4
|
441862
|
|
14
|
3
|
4639
|
|
15
|
5
|
49965
|
|
16
|
6
|
108077
|
|
17
|
3
|
96457
|
|
18
|
6
|
4639
|
|
19
|
3
|
225088
|
|
20
|
3
|
360175
|
|
21
|
5
|
180202
|
|
22
|
6
|
1587
|
|
23
|
5
|
8563
|
|
24
|
3
|
65039
|
|
25
|
3
|
27578
|
|
26
|
5
|
36240
|
|
27
|
4
|
7841952
|
|
28
|
3
|
63165
|
|
29
|
3
|
152554
|
|
30
|
4
|
200812
|
|
31
|
6
|
42754
|
|
32
|
6
|
191057
|
|
33
|
3
|
28554
|
|
34
|
4
|
549621
|
|
35
|
3
|
86162
|
|
36
|
3
|
74397
|
|
37
|
3
|
169412
|
|
38
|
4
|
1253
|
|
39
|
3
|
123941
|
|
40
|
4
|
23657
|
|
41
|
4
|
13484
|
|
42
|
3
|
47547
|
|
43
|
4
|
13484
|
|
44
|
3
|
4201
|
|
45
|
3
|
1200947
|
|
46
|
1
|
266110
|
|
47
|
3
|
47022
|
|
48
|
3
|
7065
|
|
49
|
6
|
298739
|
|
50
|
3
|
7684
|
|
51
|
0
|
153899
|
|
52
|
3
|
34403
|
|
53
|
3
|
15953
|
|
54
|
5
|
275801
|
|
55
|
6
|
1379
|
|
56
|
1
|
153899
|
|
57
|
3
|
10710
|
|
58
|
3
|
4639
|
|
59
|
3
|
34403
|
|
60
|
3
|
7065
|
|
61
|
3
|
107056
|
|
62
|
3
|
7065
|
|
63
|
3
|
7065
|
|
64
|
3
|
400247
|
|
65
|
3
|
8923
|
|
66
|
2
|
47508
|
|
67
|
1
|
48298
|
|
68
|
3
|
497701
|
|
69
|
3
|
975610
|
|
70
|
3
|
370559
|
|
71
|
3
|
8519723
|
|
72
|
3
|
339692
|
|
73
|
3
|
339692
|
|
74
|
3
|
98304
|
|
75
|
4
|
361545
|
|
76
|
3
|
810721
|
|
77
|
3
|
27578
|
|
78
|
3
|
361643
|
|
79
|
6
|
7065
|
|
80
|
4
|
17138
|
|
81
|
3
|
7065
|
|
82
|
6
|
247525
|
|
83
|
3
|
76986
|
|
84
|
4
|
42387
|
|
85
|
3
|
47022
|
|
86
|
4
|
10441
|
|
87
|
1
|
8019
|
|
88
|
3
|
47022
|
|
89
|
6
|
160703
|
|
90
|
3
|
19698
|
|
91
|
0
|
586776
|
|
92
|
3
|
339692
|
|
93
|
3
|
47022
|
|
94
|
3
|
18248
|
|
95
|
2
|
17090
|
|
96
|
3
|
14420
|
|
97
|
2
|
136522
|
|
98
|
2
|
64713
|
|
99
|
3
|
16590
|
|
100
|
5
|
4639
|