Add on domains

[toto]

Having directories on add on domains does it affect search engine ranking?
This mean that they are sharing the same class ip.
What would you advise?

[shadav]

you mean like having a .com and a .net both pointing at the same site?

if so, yes. I had this for my directory I had shadav.com and shadav.info
shadav.com i promoted and it was a pr 2
shadav.info i didn't promote there for it remained a 0

unfortunately i forgot to renew my .com lol so said forget it started promoting my .info and contacted everyone i could to switch any listings of .com to .info and thankfully on the next pr update my .info shot to a pr 2

i don't see why it should matter when they both point to the same index.tld however it does

and even typing in www . domain.tld or domain.tld will sometimes give you a different pr as well

same with your hosting account address (i assume you have one)
yoursubdomain.hostingaccount.tld will be a different pr then yourdomain.tld
you'd think someone in Google would rectify this or something....

[Shabu]

IMO, class is not a big issue! Addon domain can't be an issue for SERP.

But some people like to get a backlink from unique IP rather than others site. So, you may take an IP for your site. I can assure you are not going to lose anything by taking an IP