How can we minimize traffic loss after a domain name change????

1) Use a 301 Redirect to permanently redirect all pages on your old site to your new site which tells search engines and users that your site has permanently moved.
2) Check for both internal and external links ( link: operator command) to pages on your site
3) Use the â??Change of Addressâ?? tool in Webmaster Tools to notify Google of your site's move.
4) Create and submit your Sitemap listing URLs on your new site.

Refer to this link for moving your site using Google webmaster
http://support.google.com/webmasters/bin/answer.py?hl=en&answer=83105

After redirecting your website to new domain, your rankings and traffic may fall... but things will bounce back to normal soon.

URL redirection is the best way to minimize traffic loss when you change the domain name. For example, your domain was example.com and you changed to myexample.com. Go to your hosting account dashboard, look for your older domain and specify the url for redirection.

I would inform my social media friends about my intentions of changing my site's domain before I do the actual change. This will make them aware of the change and they will be looking forward to reading my site with the new domain.

I will also redirect the old domain link to the new one so that if anyone clicks the old link, they will be automatically be redirected to the new domain.

I think there is a way to place an automatic redirection to your new site. That happened to our company’s website when we were starting because we were using the beta on another site address. When we have finalized the website’s design we uploaded the contents to the new URL and placed a redirection notice so that browsers of the beta site will be brought to the new URL.

Check Domain name related your website and also you must see your first competitor domain name and buy..

Tray to keep ut your old domain and forward people from old one to new one also announce people that you have changed domain

yes you've said it all domain forwarding will egt all the traffic from the formal domain to the new domain.

tell to google by using google webmaster -> domian name change
use redirection or tell to your visitors that this site has been moved