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One, is the method I am using by looking at the linking pages titles and descriptions. I believe Inktomi is using this system. This is more theme oriented.
The other, is to only look at the text of the inbound link. I believe Google and Altavista are using this system to a very small degree (this is why link programs do so well in google because you write the link with your keywords in it).
Inktomi is using a combination of both.
Excite is doing something along these lines, but I am not sure just what it is entirely.
Fast, Directhit, Infoseek, and pro.lycos (the lycos based db) are not using any or even counting links at the current time. (infoseek 'might' be counting links, but I don't think so. They toyed with it a year ago when then went to the directory model).
Cool indeed. But is this really on the level? How in God's name could this utility check 1.444 and 1.076 links respectively in just 5-10 seconds? That's speed of light. Or does it content itself with the first page that AV serves?
To do it this simple way, the data is already there in the database for the search engines to use. However, if they look at link text, they have to reindex all those pages, accumulate all that link data, process it, and finally determine the keywords (extremely processor/resource intensive).
re: links in title.
I don't think this is very good at all. Nothing says low rent page like Links, Resources, or Bookmarks in titles or filenames. I know one engine that will not index new pages with those words in titles, tags, or paths. Personaly, I wouldn't join a links program unless it did these things:
a: unique titles.
b: no page should have links, resources, or bookmarks or their stems in titles, paths, or tags)
c: random generated pages (mix the links up across pages).
d: random unique (you choose) non-numeric filenames.
If I were to do it again (not gonna happen), I would:
a: do the above again.
b: require a link from their home page to the link page.
c: if the links page is not found in major se's within 90 days, your outta here.
d: require unique titles for all thier pages.
e: put a small set of 10-15 links at the bottom of each page that link to other peoples 'links pages'. (get some cross promoting going on).
f: require first 10links on each links page they put up to be 'above scroll' on all pages in visible 'no spam' viewing atmosphere for surfers.
f: charge $70 per year ;)
One minor problem, if you enter a site with no links to it, the keyword "movies" is featured.
You say that this thing is really simple, suggesting that major engines will have more sophisticated programs to determine theme. But there are lots and lots of search engines out there who are neither sophisticated nor likely to make major investments in cutting edge technology. They might jump at a "simple" solution such as this one, which would make it significant indeed. Your idea may well turn out to be a lot more than you think.
After the update I now have an additional 40 links to my site (no changes to the site itself). The reputation checker gives the two words in my key phrase as the top 2 keywords (links is now in 4th place). AV now lists me in 3rd place for my primary phrase.
A sure sign that relevant links make a huge difference.
In fact, have you ever seen this little gem when viewing Google's cache...
These terms only appear in links pointing to this page: [insert keyphrase here]
Sometimes they make all the difference in the world!
BTW, very nice tool Brett. As far as link programs go, check out linktopics, they seem closest to your ideal link exchange program.