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1) Google doesn't treat ODP any differently from any other site in terms of the value of a link.
2) how much you gain depends on
a) the pagerank of the ODP page where you're listed
b) the number of sites on that page (pagerank given is split between them all equally so more sites = less ranking points handed on).
3) the ODP database is used by hundreds of other smaller sites, each one of which gives you a tiny smidgeon of ranking worth, but lots of tiny smidgeons can equal a reasonable figure.
The general assumption is that for a normal-sized site, it is common for a link in the ODP to boost the pagerank of the page by about 1 pagerank point. Maybe more for a site that previously had a pagerank of e.g. 1/10, certainly less for a site that is already 9/10.
[edited by: Dante_Maure at 2:34 pm (utc) on Dec. 11, 2002]
One other comment. You wrote "The general assumption is that for a normal-sized site, it is common for a link in the ODP to boost the pagerank of the page by about 1 pagerank point. Maybe more for a site that previously had a pagerank of e.g. 1/10, certainly less for a site that is already 9/10." This isn't necessarily true. It does depend a lot on what your existing inbound links are. I can give a good example. I am the ODP editor of Recreation: Drugs. That page of the directory is PR7, and from analyzing sites listed in it, AFAICT just by getting listed in that cat of mine is enough *alone* to get your site to a PR6. In terms of getting PageRank value from an ODP listing, I'm about as powerful an ODP editor as they come. For those who don't understand why, Recreation: Drugs is about as high a category on the tree as you can get (are there any ODP directory pages with a PR8 that aren't just @links?), and this category doesn't have that many listed sites. However, if your site fits into Top: Shopping: Crafts: Woodcraft: Decorative: Intarsia, that directory page has just a PR of 4. A PR6 off the bat with just one listing is dang good in Google terms. For example, the major domain name registrar Godaddy has just a PR5 home page. If your site fits in the right ODP category and you can get in, this alone is enough for a strong PR.
The new site got a PR4. The site went up to PR5 this month (a lot more inbound links).
I dont think a PR7 ODP link alone is good enough for a PR6.
My 2 c
JOAT
Could it be the additional boost from ODP data driven sites?
Eg a PR7 cat in ODP is a PR5 or PR6 in the data dump sites?
Therefore instant multiple high PR links? (almost instant anyway?).
If true, it stands as an incentive for creating a quality site! :)
JOAT
Reasons why you might not have a green bar:
1) You have only just entered the directory - it may come next month
2) Your site was down temporarily when Google spidered last month
3) Google cannot spider the page in the directory because it has dynamic characters in the URL
4) other reasons?
Are you a very experienced editor? You must feel under some pressure with all this power!
In terms of high PageRank categories, Health has sites listed in the root category and is a PageRank of 8/10.