I registered a bunch of exact match domains and installed Wordpress on them.
Many of them ranked on page one for their target SERPS, with no inbound links and no content.
The only thing I can figure is that during the install process Wordpress does something which tickles Googlebot.
Perhaps "Allow my blog to appear in search engines like Google and Technorati" is a bit more powerful than it sounds. :D
I'll give you my thoughts, Might be better than a direct suffix VS SEO answer.
Every thing I do is for peoples/visitors/clients, Not for the SEO/SE's.
Therefor, When I pick a domain name, I think how they will look at it, Not the spiders..
I go with my feeling and it always works.
Here's another interesting set of data from that project. Here's how the domain extensions are distributed:
- 19 .com domains
- 60 .net domains
- 29 .org domains
And here's how the domains are performing so far:
- 11 of the .com's are ranked.
- 38 of the .net's are ranked.
- 27 of the .org's are ranked.
That seems to imply that org domains are more powerful than com or net domains.
Moreover, the org's are theoretically in more competitive niches -- because I only registered org domains when com and net domains were not available.
Pretty strange stuff!
In conclusion .net is the weakest, .org is ranking good because is related to organizations and .com is a .com :)
Of all sites that I done until now, it was the hardest to develop .net domains (out of .com .net .org).