Are these engines any good to be added?

Ferryman

http://zapmeta.com/
http://polymeta.com/ (using &resultpager.offset=1 etc. to browse through pages)
http://vroosh.com/
http://www.wotbox.com/

DonCorleone

zapmeta banned me straight away , vroosh displays all result on one page . wotbox could be added .

Sven

wotbox.com is added on next update