I'm working on a website for a company that manages about 500 apartments.
On the home page, we have listings of all the apartments that are currently available for rent. I've been using the <abbr> tag to work the word "apartment" into the listings, like this:
<abbr title="one bedroom apartment">1BR</abbr>
I'm just curious to know what effect, if any, this might have on search results for the word "apartment". I'm guessing most engines don't look at abbreviations closely, but I might be wrong...