I realize my comment is rude and I will probably be flamed. But it's just too hard to resist after reading the first couple ideas like selling ties online because the author believes people will pay to collect ties (first time I heard of this) and virtual girls to train. Regardless, I apologize for my rude comment.
Perhaps another year and a half of keeping your mouth shut is in order?
As for the ties, I do not just believe that people will pay for them, people do:
http://www.zazzle.com/collector+ties
So if even my - according to you - idiotic ideas have found traction in the meantime maybe there is something there ;)
The score with 'ideas' is about the same as with start-ups, most of them tank. The problem is that if you wouldn't have the bad ones you wouldn't have the good ones either.
And if you could muster the energy to read on for a bit you might find some that are not like that, or maybe you would think they're all junk.
We should start a campaign: "Save those Engineering Hours, Stop half baked ideas".
The thing that's been keeping me alive for the last 15 years started as a bet for a bar of chocolate, several pivots later it was a top 300 website, sometimes it doesn't take much.
That being said, a lot of half-baked ideas proved rather popular. I mean, seriously, does "post what you are doing, but you're limited to 140 characters" sound like anything really worth while?