If you want market predictions try Twitter or Stocktwits. Novice traders tend to obsess on entry signals whereas successful traders consider it of little if any importance, $ mgmt always comes first.
Following another traders entry signals is a losing proposition, a road nearly every newbie has been down including me. Successful traders have to become completely independent - the faster you get out of the mindset of trying to follow others the better.
ET is cool because the strong hands are always around to knock sense into those that need it. Making this site about trade picking will squelch of the aggregate of many years of the collective hard won trading wisdom on this site.
I:t doesnt have to be likes based on entries necessarily, just make it so that likes based on trading in general are more meaningful, it would save alot of time trying to figure out if someone is legit. Also you could filter out the most liked posts in somewhat real time, which would draw people towards trading ideas that were the best.