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I believe it could work unless the SE's detect consecutive IP numbers. Does anybody have any thoughts or experience regarding this?
More Ideas -
1. Sign up for a link popularity program
2. List the site in all the directories and then submit the listings
3. Look for relevant links manually by searching for your phrase on the engines (or higher a high school kid for $8 an hour to do it for you) This could also be sped up with an email harvester as long as you do it ethically (only email each site once, personalize each email)
4. Create some kind of an award (ex - best insurance sites)and send out an email to sites with a line of code that includes the award graphic along with a link back to your site.
We concluded this after many of our domains were kept getting hammered on AV. We were using "Link Attack" and "Links To You". To confirm for your self. got to those sites and check and see how many pages are listed on AV from the site at the top of the list (those being on the program the longest). You will be surprised to find 95% are no longer listed on AV the other 5% may have 1 page, the root, listed.
Owning the domain gives us control over the content and gives us the ability to develop extremely relevant content. It also easier said then don't to get 100 other sites to link to you.
At any rate if anybody has had LONG-TERM success with a link farm or had experience purchasing lots of domains, I would be very interested in hearing more about it.
I did, and that was an extremely viable approach to SEO for spidering engines, particularly back in '96-98. It seems the positive effects have been diminished now in most of the engines that count, the movement towards PFP being a primary reason. The current notable exception would be Google, I think Brett still cites good results from cross-linking between domains. As for AV, who knows what they are doing. All in all, I still like this approach because it spreads the risk over all your domains.
I suspect that spreading out your IP numbers increases your odds of success, too.
But Seth has a good point, it does take alot of resources to go this approach.