Don't listen to these bunch of DOUCHE's!! Why can't you share a little info with him? We all started like him by learning from other successful people.
I have been doing FB ads for about 1 year and profitable niches change. But right now what is working well for me is ZIP Submits and Email submits. You can generate tons of leads with this lil offers.
Also Re-Bills are killing it on FB right now. Acai is dead. Try teeth whitening, Colon Cleanse and Muscle building pills. Re-bills are my best performing campaigns if you hit the right demos.
And for last Dating keeps making me good cash ($600 - $1200) a day. I suggest you go with CPM ads and pics of women with large breasts/cleveage.
Hope this helps