* separate keywords with comma
Top Websites kindle 1-15:
1.
getpocket.com 
339,267

2.
amazon.nl 
320,792

3.
gutenberg.org 
186,143

4.
instapaper.com 
144,992

5.
hackaday.com 
108,245

6.
laopiniondemurcia.es 
31,198

7.
postcourier.com.pg 
27,300

8.
missoandfriends.com 
26,439

9.
activityvillage.co.uk 
24,422

10.
krazydad.com 
24,314

11.
sudoku.name 
24,042

12.
coolsite.co.il 
23,816

13.
youplay.com 
22,309

14.
mindgames.com 
22,230

15.
kakuroconquest.com 
16,715