Likes they have given, or likes people have given against them?

Likes given to them, like the thanks counter.

so just like the "thanks" button (which people hardly use now )

problem with counting likes and taking away dislikes is... for example...upload a photo of your new alloys... some people like and others dislike... they dislike the wheels... not your post

Well ok, maybe have them separate, or put them on the user's profile page instead. It just seemed a shame to waste them when the stats are probably hanging around somewhere.

I can see from your 200 thanks that people hardly use it

I can't see this being useful - this has been abused so much in the past (when we used to have 'reputation'), but the current 'Thanks' system seems to work.

Likes and Dislikes doesn't need to be shown on the user profile as well, in my opinion. It is what it is.