i have thousand 404 errors from my old site structure...from components i don't use any more like jomsocial and i don't need them to redirect to a new one.
goggle crawls everyday thousand of them had 18.000 users/ and links are like jomsocial user profile, user albums, user groups etc.

is there a way to force a 410 gone instead of 404 custom page for all the links that have (com_community) on the urls so that it drops them faster or should i leave them as 404? i have at least 65.000 of them and goggle seems to crawl 5.000 every day.
as i read goggle often drops 404 after 3 crawls so i will need at least 15 days x3 ~two months to get rid this false crawls?

some examples
/index.php?Itemid=150&option=com_community&userid=399&view=profile
/index.php?Itemid=150&filter=mutual&option=com_community&task=mutualFriends&userid=4957&view=friends
/index.php?Itemid=150&option=com_community&userid=17173&view=friends
/index.php?Itemid=150&option=com_community&task=myvideos&userid=6599&view=videos
/index.php?Itemid=150&groupid=4&option=com_community&view=photos
/index.php?Itemid=150&option=com_community&task=mygroups&userid=2180&view=groups
/index.php?Itemid=150&option=com_community&task=myvideos&userid=6398&view=videos

any help is appreciated.