[suckafree]

Nice list, but most of these are low hanging fruit and are already saturated with established players. The riches are still in the niches.

Example: instead of losing weight, I'd focus on helping people gain weight. It's a much smaller market, but there are lots of skinny guys wanting to gain weight in a healthy way (me included).

[hugh3]

Sure, there's existing solutions for most of these, but they don't actually work very well. Weight-loss websites aren't all that good at helping people lose weight and keep it off. Dating websites aren't all that good at helping people fall in love. And nothing is good at helping people to stop procrastinating. If you can actually make something that works then the market is all yours.

(Not all of 'em though; I admit things like "travel website" are pretty saturated at the moment.)

[rbonvall]

> nothing is good at helping people to stop procrastinating

Maybe the golden idea is to help people to stop feeling bad about procrastinating :P

[mattiss]

Lift heavy weights. Eat as much as you can stomach, then eat some more. It isn't rocket science. Seriously just eat 5 huge meals a day and a protein shake before and after you workout. You will put on muscle like nobody's business. It's also the ONLY way to do it...

[lawn]

If it really was this simple as with loosing weight (basically eat less and workout right?) then all dieting courses, pills, books and so on wouldn't sell. But they do and that's why this would sell too.

[gaius]

It's simple, but that doesn't mean it's easy.

[ibsulon]

That's a saturated market too. :)