If i have a domain name, how many sub domains can i use with it?
Im getting the impression there is a limit to how many sub domains i can create, is that true?

The limits of subdomains are placed by your host, not the domain registrar.
So most likely, you can have unlimited sub domains.

if you have a reseller account then you can set sub domains to unlimited.

Yes but dont use too many. It gets complicated and theres still no proof that search engines like sub domains better than regular folders.
So take it easy

Theres no proof?
Are there any studies on this at all?

No I don't know of any either. It's still a new technology, I mean the internet is only 10 yrs old.

hehe yes the internet is "only" 10 years old but thats a heck of a long time in the computer world.
Just conduct your own tests. Throw up some domains and make some sub domains, see how long it takes to get spidered.

Thanks people
I will ask my web host to set up unlimited sub domains for me

I wouldnt use alot of subdomains just beause they are unlimited. THey wouldnt be unlimited if they were worth anything
I prefer sub folders, ,Im not big on sub domains.

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22 sites and counting

why is that?
why are subfolders better lucky1?