A few years ago, I wrote a puzzle game called Coco Loco. It was an angry birds style "throw the thing at the other thing and collect the things" but with actual puzzles and items you could deform the levels with to solve the puzzles more easily.
I had a free demo out of the first 10 levels, it got good feedback from testers, and I was ready to roll out a version with 50 levels.
Then, another angry birds style "throw the thing at the other thing and collect the things" but with actual puzzles and items you could deform the levels with, called Coco Loco (trademark), got released.
My initial reaction was that they'd taken my name, my level ideas, and put a larger team on it to get the game out.
Of course, they hadn't.
Turns out, we had both come up with very similar ideas, and the exact same name, at the same time.
These things happen. Thankfully, all the puzzle design work I did could be applied to my current project, Spheretic. (http://notnowlewis.com/spheretic/ if anyone's interested!)
If you have not figured out how you are going to do this, then moneyed competitors will beat you. If you have figured it out, then my experience shows that you will continue to make money, even if the competition matches you feature-for-feature.
http://en.wikipedia.org/wiki/Regular_expression
also, security through obscurity is also a flawed concept to begin with. your obfuscation efforts do absolutely zilch compared to google's gmail team and their spam detection techniques.
Seriously, I've wondered what people think they are accomplishing when they write a phone number like 2five5-3seven6-2one1four on a craigslist ad. Bots are going to find it just as easily and humans can read it.
My brother and I created a very popular website a couple of years ago called Oracle of Legends. It was a League of Legends fansite with a LOT of features that are now copied elsewhere.
https://web.archive.org/web/20120509003942/http://www.oracle...
Loking.net didn't have the skin viewer it now has. They saw our skin viewer (granted it wasn't "ours") and built one themselves.
Ultimately a large team funded by ZAM Network's limitless supply of money won over two guys in South America with limited time and money.
My brother and I are now a powerhouse though, and we're building a new website for a new game we enjoy playing. THIS time, I don't care if the competition has more money, we'll win through sheer excellence and localization (something large websites from ZAM don't have).
It was a great experience for me and it landed me a lot of contracting work. :)