Should clarify on the lawsuit thing too, I'm not entirely positive you -cant- sue someone from another country (although it surely makes it more difficult), but you'd still have to prove they actually stole your idea.
That'd be tricky to do with a broken website, so having a good site works two fold - one, someone's less likely to take the idea because it's already working and is KNOWN to be the original, and two, if they do steal the idea, you've already got a track record as having the idea first.
merrillmck's also way right at the very last line in his post - this isn't something like "stick such-and-such's ads on the site and you'll be making millions," it's more like "you're gunna have to get something good going FIRST, before the ads will bring in enough to even break even."
Tip #1 for that though? No offense to x10, but get off of free hosting (if you're on free ANYWHERE for that matter). Seriously. Doesn't matter if your site is filled with solid gold if it's down for any length of time longer than 2-3 minutes daily, and while x10's the best, no one's perfect - even x10 has downtime, although lately with the server consolidation it's been worse than usual.