What liability falls on us if we create an app for people to modify copyrighted images & violate the terms of the copyright?

Kudos to you for seeing the value in great copy. I love that you mentioned 37signals, which is an organization that's made copywriting part of almost everyone's jobs (or so they've shared on their blog). MailChimp and Zendesk are two others that people often point to re: great copy that builds a brand and differentiates; Groupon is another awesome example of really, really tonal copy that people actually read (which is more than half the battle). MailChimp has in-house copywriters, including Kate Kiefer (https://twitter.com/katekiefer), and so does Groupon. I'm not sure who writes for Dropbox or Zendesk, though searching companies on LinkedIn can often reveal little-known in-house geniuses. The startups you mention have a certain style and tone that I have to say is different from what you'll normally get with a "direct response" copywriter, though by all means check out the link David Berman submitted to you because you never know. I recommend that, to achieve the slightly funky, funny-ish copy you're looking for, you seek out a conversion-focused copywriter with a creative and UX background. You need someone who's totally at ease adopting a new voice / tone and using it appropriately across your site and in your emails; less experienced copywriters might be heavy-handed with the tone, which often gets in the way of the user experience (e.g., button copy that's tonal can lead to confusion). Be careful, of course, not to push your writer to be exceptionally creative -- because a little touch of tone goes a loooong way for busy, scanning eyes. Here are some great freelance copywriters you could consider: http://copyhackers.com/freelance-copywriters-for-hire/ The link to Neville's Kopywriting peeps is also great. Before hiring, ask to see a portfolio or get a) links to websites they've written and b) a zip of emails they've written; if a writer is accepting clients, they'll usually showcase their work on their website. Check out their blog and tweets to see if their voice comes through in their own writing. Don't hire bloggers or content creators for a job a copywriter should do. Don't hire print copywriters for web work unless they do both. And when you find a great copywriter, trust them... and don't let them go - because 10 bucks says, they're in demand or about to be.

I wouldn't get into the game of charging per word/hour. You don't want to commoditize yourself. I suggest looking into value-based fees. Here's a good place to start. http://www.freshbooks.com/blog/2013/06/12/breakingthetimebarrier/

The best day to launch your app is either Wednesday night or Thursday, because the iOS App Store changes features every Thursday and you may get featured that day as "New games..." "New app..." etc. Ideally all your marketing/PR/advertising efforts should start that day (Thursday) because Apple likes it when an app is being privately promoted at the same time it's being featured. Yes AdMob could work for you but please know that there are many other ad placement companies similar to AdMob that can work for you too. You need to see what kind of clients they have, if they match with your niche, etc. Usually this is a trial and error process, you start with several ads and you see which works and which doesn't, you improve, you cut them. etc. Good luck

First of all, there is no "one size fits all" attitude in angel investing. I will tell you that the *best* angels will make a snap decision by playing with the product and assessing founder/market fit. At the right valuation, the kinds of angels you really want backing you will invest purely based on a killer early product experience and conviction of founder/market fit. But if you have made your app available in the US app store already, you have made a critical tactical error if your app isn't already trending towards 100,000 installs within the first 30 days of availability. Apps should first launch in a non US, english-speaking store to do early product/market fit work. Your "day one" event in the US app store matters to seed investors and many angel investors. While there are exceptions (most often in SaaS or enterprise mobile models), there are only 4 times to raise funding from seed funds for a mobile start-up stage company: Pre-product: A deck, a market opportunity and a team. Pre-launch: Product fully built but holding launch for funding. This will usually involve a private beta of at least 1000 users or a soft launch in an international store. 30 - 90 days after US launch: Must be at or trending towards 100,000 installs with very strong month-over-month growth. If you miss those windows, the next time to raise is after you pass over 1,000,000 with strong retention and engagement that correlates to your business model and user personas. As a mobile-first entrepreneur and angel investor, I'm happy to talk to you about this in more detail

(I'm a small biz attorney who helps people with copyright, trademark, and other IP law, and I'm answering per U.S. law.) As soon as you take your idea and put it into a tangible format (write it down, create an infographic, record a video), then that writing/infographic/video is automatically protected by copyright law. You can record the copyright on it too, which makes it easier to protect and get damages from other people taking it. But the formula itself would be probably protected under trade secret law or patent law. Patent law obviously takes a bit more effort, because you have to apply for the patent and get your application examined by the USPTO, which takes years and $$$. Keeping it protected under trade secret law means you have to make an effort to keep it secret (which may not work if you are disclosing it as part of your marketing efforts), such as keeping it confidential and requiring NDAs. As someone else said, the other terms you use might be protected under trademark law. If a member of the public would use those terms to link your products/services with the source of the product/service (aka, your company), then they could be trademark-able. There are some state law protections for trademarks, and you can also file to register the trademark with the USPTO and get more protection. Hope that gets your started!