https://developers.facebook.com/tools/explorer/ Often asked but little known tricks (and thanks to facebook's API you can do a lot more than you think automatically) to delete a spammers comments from your statuses, go to the link above and choose FQL, get an access token and run the following query to get the ID of the user:
SELECT fromid, text from comment where object_id in (select status_id from status where uid=me())
Then use:
SELECT id from comment where object_id in (select status_id from status where uid=me() limit 0,100) and fromid=[id of user to delete comments]
or
SELECT id from comment where object_id in (select link_id from link where owner=me() limit 0,100) and fromid=[id of user to delete comments]
Then open your debugger console in the browser (usually F12) then fill in and paste the following javascript:
var acc=""; //put access token in here
var dat=""; //put data returned in here
for (var obj in dat.data) { var xhr = new XMLHttpRequest(); xhr.open("GET", "https://graph.facebook.com/v2.0/" + dat.data[obj].id + "?access_token=" + acc + "&format=json&method=delete&pretty=0&suppress_http_code=1"); xhr.send(); xhr.responseText; }