Hi,

of course you can & should recommend avast…

if you want to act as reseller/affiliate: have you read these pages ?
http://www.avast.com/eng/company/businnes_partners/new_businness_partne/reseller_program.html
http://www.avast.com/eng/company/businnes_partners/new_businness_partne/affiliate_program.html

have you tried the appropriate contacts here ?
http://www.avast.com/eng/company/how_to_contact_alwil.html

P.S.:
you might want to join in this Thread:
http://forum.avast.com/index.php?board=9;action=display;threadid=6113
It seems ShareIt has some difficulties responding?