Multiple domains one hosting account

I have multiple domains on one hosting account, will Google still count the links from the other sites to my main site on my account as separate domains? Or is it best to pay for separate hosting accounts for each?

thanks,
Anne

[Relevancy]

The ideal would be to have unique c blocks, but as long as these sites are not linking back to each other then you should be ok. If all of them are linking to one site, then that one site should not link back to them.

[chowzer]

Google supposedly will notice that your domain's are on the same hosting server. If you are trying to rank higher and get more quality links, it would be more beneficial to you to get more hosting. I have multiple domain's on different hosting sites...and i do not link a to b and b to a. i link a to b, b to c, c to d, d to a, and c to a.