rf-harris

It looks nice but you should add more content in it

Looks like there isn't in your website. Have you switched to another site ?

One hand on the mouse and taking screenshots + playing with photoshop

Welcome to the forum. Glad to see you

it is looking good, well done (Y)

There is no harm in putting your link at the bottom of your client's website and you can make some of these links nofollow and some of them dofollow and also vary your anchor text.

Yes, why not

There are plenty of things you can do in order build links but always remember that quantity isn't the only thing which you should consider, you should concentrate more on the quality of the links rather than their quantity.

Which social network you thing is most effective to promote any kind of business.

Where is your design ? Can't see anything in your post about your app or design

You can join any freelancing website and post your job there. Plus you can also find many people looking for work on various forums.

Paying for facebook advertisement isn't a bad idea. It is a pretty large site to reach lots of people so you should take advantage of this.

Thank you for sharing these useful tips. Hopefully this will help people get the best out of the social media sites.

The one you have in your avatar at the moment is looking great.

Try gtmetrix , I found it very effective