What do I use them for? Primarily I use it for scraping blogs for commenting. But you can use them for many different scraping jobs.

KW List buy it here

Arabic Keywords 9199554
Bulgarian Keywords 823209
Chinese Keywords 214247
Danish Keywords 313975
Dutch Keywords 241767
English Keywords 413809
French Keywords 390802
German Keywords 1651805
Greek Keywords 575007
Hungarian Keywords 18151
Italian Keywords 718728
Japanese Keywords (ISO) 115528
Japanese Keywords 231818
Korean Keywords 5321
Latin Keywords 160707
Mongolian Keywords 2160886
Norwegian Keywords 922884
Polish Keywords 3887782
Portuguese Keywords 980609
Random 1276061
Romanian Keywords 1718090
Russian Keywords 1076823
Spanish Keywords 512481
Swahili Keywords 19839
Swedish Keywords 407076
Turkish Keywords 25854
Ukrainian Keywords 1308780
Ukranian Keywords 290460

Massive KW List
English 4.6 billion keywords
Russian 1 billion keywords