>I am wanting to know wich main search engines like to
>have the keywords without commas. We haven't settled that question. I habitually use plain word strings (no commas)
and don't have any problems getting sites to show up on phrase and
word searches. Others use commas with similar success. I have not been able to
find any reliable sources pointing either way.
The only thing I can really warn you about:
If you use ANY commas to set off a phrase or phrases, you MUST use commas between the
single words in that META tag. As soon as the indexing routine hits a comma, it says
to itself, "This is a comma-delimited text string." and it splits the string at the commas.
"word word word word, multi-word phrase, multi-word phrase" = WRONG
because it will be treated like three phrases:
word word word word (one phrase)
multi-word phrase (another phrase)
multi-word phrase (another phrase)
"word, word, word, word, multi-word phrase, multi-word phrase" = CORRECT
because it will split into single and multiple word phrases.
"word word word word word word word word" = OK
Will be seen as space-delimited keywords
"word, word, word, word, word, word, word, word" = OK
Will be seen as single-word "phrases" and is functionally the same as the no-comma version.