element should be in the HEAD section of an HTML document.

HTML specs and search engine criteria are two different babies! Yes, the META tag is recommended in HTML; but people spam the search engines with the META tag, so some have come to disregard it altogether; while the usual "rule" one sees out there is not to repeat any keyword more than 7 times in the META tag, else it'll be ignored altogether.
   This then is OK:
"sundials, horizontal sundials, vertical sundials, equatorial sundials, polar sundials, analemmatic sundials, reflected ceiling sundials"
   and this is not:
"sundials, horizontal sundials, vertical sundials, equatorial sundials, polar sundials, analemmatic sundials, reflected ceiling sundials, portable sundials, hemispherical sundials, sundials in Antiquity"

If Google has become the preëminent search engine, one of the reasons is that it ranks pages quite cleverly, based in part on how many other pages link to a given page, as an index to its value: in effect Google has coöpted all the writers of websites! This favors sites with true content; after a while, the better sites gravitate to the top of the rankings, regardless of keywords by the way: thus rendering some of these problems moot.

The lag time (between the time a page is put online or modified, and the time the page or its modification is indexed by the search engines) varies with the search engine, the prominence of the server, the directory depth, and for some engines the varying frequency at which the page is rechecked (which in turn is based on the engine's ranking of it). For many sites, it is around 6 months.

--
Bill Thayer
41N53 87W38
col cuore a
42N59.5 12E42.4 alt.313m

http://www.ukans.edu/history/index/europe/ancient_rome/I/home.html

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