I am trying to diversify my blogs on different host providers but as I am sure most of you know using a ton of different providers can be costly. Currently I have set up a few $1 hosting accounts at cbahosting.com bizzyshark.com 1dollarhosting.com hostica.com to just name a few. But I have more than 100 sites and was researching that to minimize footprints I should keep the domains to a bare minimum of 3-5 websites per hosting account an IP. So I am looking to see if you guys have a huge list of different hosting services where I can get cheap hosting as you can see with 100 sites I need about 30 different hosting accounts, unless someone here has any other ideas.
About the idea... Buy a reseller hosting service.. It will be a lot cheaper than buyying 30+ shared hosting.. Buy a reseller and in fact make one of your websites a hosting site.. Use it for yourself and sell it if you need.. I heard hostgator or bluehost is nice.. Give them a shot.. Personally, I'm waiting for my current hosting to end to buy from bluehost.. Their offers seem quite good to me.. Check it yourself.. I recommend Reseller Hosting!
Why do you need to do this? I'm not sure if it's cost effective or useful altogether. Just host your sites at a few providers. It'll be ok. No SEO problems.
I don't think this is what OP was looking for since he will need to be hosted on several different IPs.
The best thing that you can do is get a reseller account and then everytime you get a new site for your blog network get ssl implemented with a unique IP- overall costs not including the reseller account will be about $15 per year per site.
I would suggest for a VPS or small Dedicated Server, as HotServers LLC giving some good servers around with lots of IP's. It would be helpful.