Google picks up on the title
- first and most.
For instance, my site has a thread called "(Send)Messages in a Bottle" where people can take a shot at finding someone they've lost touch with, when even facebook cant find them, by posting
their name, and the name of whom they're looking for, as the title of a thread.
Within days, anyone google-searching either of those two names, will find a search result with a link to that thread. - and so they can make contact.
So it's the title that Google looks at first.
Content, I don't know about.. I haven't been seeing my content come up in searches *shrug*
But titles go right to the top, and quickly.
_____________________________
Okay, so you asked "Can anyone tell me how an article can promote a site or blog if it does not contain any link?...
And the answer was: without a link, the title will get into a search result.
But part of what you asked was also
"how can an article promote a site or blog?"Okay. Make sure the title relates to what the site or blog is about.
And make sure it's a winning title (one that doesn't just say "steak",
but makes us actually hear the sizzle of it cooking, and smell it.
You know? So-
Write a really good "headline", which
1-relates to the site's theme interestingly and
2-states the articles content interestingly
(ie, in a way that makes even people that aren't interested just "have to" read more!