Buy a domain name (Advise please)

I want to buy a domain name that already exists but I will be adding a single letter at the end. The domain name has an English phrase in it so it's not a unique company name.

Would it be a good idea to buy a domain name by adding the letter 2 at the end of the domain that already exists, for example: physics2.com?

The website will an educational website so the domain name will be similar to that.

 

Two words stick together domain name lose value.

 

All depends on who owns the other domain. You could put yourself into a leagl matter!

 

So should be completely scared and avoid it? The word physics is a very general word. I won't be using physics it will be another subject.

 

It will be nice if the existing domain has good traffic. If it is physics never add a number to it as it will loose all domain value. Instead you can add 's' to it.

 

always buy domain with one keyword that is best for you...

 

Why would adding a number corrupt it's value? Suppose I was to 'ia' as in Physicsia.com

 

There is no obvious reason why you shouldn't or can't buy such a domain name. I personally don't like it, it gives the impression that the original name wasn't available and you just added the number. Nevertheless, this is just me and I can't speak for less experienced users that might be part of your clientèle.

 

Numbers are not much search engine friendly

 

Thanks everyone, I've learnt something definitely. This is the domain name I have decided to go with: http://www.mathsrev.com targeting maths.