I'm starting to work with lot of adsense-ready sites (around 30-50 sites) and I'm hosting the domains under the same hosting service, so they all will have the same IP address. Do you think this is going to cause me any trouble with google? Any piece of advice about the subjet is welcome.
Wont be any issue at all if you arent linking them together. If you do some heavy linking between all the sites then it wont HURT but they could be not counted for.
I'm thinking about cross-linking the older ones with the new ones so they can get indexed quicker, it has worked for me before, then I just take the links out.
you can host them on same ip and even link them. just link them wisely and don't do heavy linking between them to avoid losing pr. as long as you don't do heavy linking I think it's ok.