Another commenter mentioned http://watson-um-demo.mybluemix.net/demo above, so I threw this together in bash for reddit comments. Bit more of a pain that entering a username, but if you take this:

        function redcom(){ ! [ -z "$2" ] && i="&after=$2" || i=""; data=$(curl -s "https://www.reddit.com/user/${1}/comments.json?count=100${i}"); j=$(jq -e -r '.data["after"]' <<<$data); echo $j; (jq -e -r '.data["children"][]["data"]["body"]' <<<$data)>>${1}-redcom.txt; echo $(echo -e $data|wc -l) lines; ( [ "$j" = "null" ] || [ -z "$j" ] ) || redcom $1 $j ;} ;

run it in bash, then run redcom <user>, it should throw all your comments into <user>-redcom.txt which you can then copy/paste to http://watson-um-demo.mybluemix.net/demo

something like this?

http://www.redditinvestigator.com/

Interesting! I like the fun guessed data. I am from Canada, game of choice is ping pong, nor do I have children.

"""

Probably from: Canada

Support OWS: Probably no or doesn't care.

Children: I do not think so...

Gamer: Only pong probably...

Like trees: Must be in a really good mood.

Behavior: Candidate as replace for Good Guy Greg

"""