hello, my Domain consist of number in it. will this effect any SERP's will this get any effect on furture SEO ? my domain is www.go4coupons.com
I don't think it has any significant affect. Actually, that's a very good domain you have there. Search engines can't read the 4 symbol and correlate it with the term for, but that's okay anyways. I recommend building good content, and meta tags for SEO.
not really. google was not a "search term", and now when you say search you allways think google. if your target is coupons, you have coupons in the domain name, so you'll not have problems with that. Focus your effort in good content for your visitors.