naming your app + business slogan/motto

Hi,

i tried namingforce.com for a name contest and it was really good. I got more than 500 names for app to select from.. I have a question about app motto or slogan ( for example Evernote has REMEBER EVERYTHING). Do you have experience with some of slogan contest companies? I found this one : http://www.sloganslingers.com .

The second question is about copywriting for coming soon page. Where to find good one for mobile app website..

Thanks a lot