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"I have had my rounds with search engines and if they dog this site I was ready to give up."
Have you received a penalty for a site before? Have you done anything naughty with this one? Most of the time sites get penalised it's because the webmaster was trying to manipulate the system excessively - so if you feel innocent then the chances of it being a penalty are negligible. Do you link to any bad neighbourhoods?
See what happens with your site over the next couple of months. If you have genuine reputable incoming links and your site is genuinely genuine then you should start working up the PR ladder. But you're probably experienced enough to know that anyway.
If you want to avoid this happening again in the future then I suggest that it's more to do with changing your attitude towards how to succeed rather than it being about changing an IP address.
The ODP don't sack people without very good reason and usually following discussion between meta editors in the private internal meta forum. I doubt very much that you got sacked because you had a disagreement with a meta.
Succeeding in SEO is simple:
Do:
1) Create one genuine site with a simple non-keyword-stuffed domain name.
2) Build up plenty of useful unique content.
3) Point all your internal pages at your homepage.
4) Exchange links with reputable sites in a similar field to whatever you do.
Don't:
1) Create ten similar sites with slightly differing domain names and link them all together to increase PR.
2) Use cloaking, doorway pages, vanity URLs etc.
3) Volunteer to edit the ODP, add all your sites with keyword stuffed descriptions and no other sites, then complain when a meta lands on you.
4) Try to cheat the system.
That's not rocket science. The spammy SEOs know these basic rules just as well as the honest ones, they just choose to go against them - so I for one will shed no tears when they complain that they've lost out.
Green bar to grey - just bad luck - no googlebot
Green bar to white - your doomed! Buy a new domain!
(I've also had luck with letting a domain drop completly out of the index, then getting it back in with quality links after getting slapped with PR0)
Well, it could be just bad luck - or could be you've really been caught!
If you have a grey-bar penalty, it is a lot worse than a PR0 penalty. You can recover (with great difficulty) from a PR0 penalty - you have to beg on one knee for mercy to recover from a Grey Toolbar penalty!
They are (however) mercifully rare - unless you spam (in Google's eyes) unmercifully. Most grey-bars are from just not being included in the index for a cycle and are nothing to worry about.
I wish you the best of luck with sorting your sites out. By the way, you don't need to tell me your industry - I already know what it is! :)