Microsoft
10
Other
20
30
40
50
60
70
80
90
100
67
Yelp
14
8
5
6
60
Microsoft
29
5
4
2
60
Google
31
3
2
4
59
Twitter
31
4
3
3
56
LinkedIn
37
4
2
1
56
Dropbox
31
4
1
8
55
Apple
15
11
7
12
55
Facebook
36
4
2
3
47
Yahoo
43
4
2
4
Microsoft, Dropbox and Apple data from 2014, all other reports from 2015.
