|List for suburbs or region?|
should I enter every suburb or just a region?
my business services every suburb in the metro area. My website ranks very well, around 1 and 2 positions for best key phrases, so i am nervous and don't want to upset the apple cart.
Should I use region (say 40's) or would I better off adding each suburb in our town (maybe 60 suburbs)?
I'm also wondering adding suburbs might improve my site coming up when people use the suburb in their search term?
Since you are doing well, I wouldn't tempt fate. If someone has done something similar, they may be able to respond, but I wouldn't speculate.
You don't specify whether you're thinking of adding suburb names to your website, or to your Google Place page, or to both. From the context, I'm assuming you're thinking of adding it to the Google Place page or to the geographic polygon in Google Places which specifies where you offer service.
Here's the skinny: there are some neighborhoods or suburbs where there simply aren't all that many businesses or retail establishments, and residents know that. In those cases, they rarely ever search using those microlocal names. So, it won't help all that much to use a suburb name that is mostly a residential bedroom city to the main metro area.
In places or for category/keywords where users are likely to be including the "geographic modifier" or suburb town names, it could indeed be worthwhile to add those names to Google Places and your website.
The downside that anallawalla appears to be mentioning is that some types of changes to Google Places can attract unwanted review of your listing, and unwarranted penalizations. If you have a small handful (less than 10) of city names, add them. But, if you have dozens, adding them all at once to Google Places could appear spammy, even if it is an honest assessment of where you provide service.
If you're adding dozens of suburb names, it would probably be best to optimize your website for them, and Google's local matching algorithms will start considering you relevant for the keyword searches involving those localities. Establishing your search presence for those locations, and then subsequently introducing them iteratively might work well.