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December 2009 Archives

December 6, 2009

New Zipcodes - 2009/11

One new Zip Code for November, 2009:


December 11, 2009

New Zipcodes - 2009/12

Four new Zip Codes for December, 2009.

09810 FPO
96444 FPO

December 20, 2009

Cheap eyeglasses (not spam!)

On a whim, I thought I'd try ordering a pair of $8 glasses from an online optical outlet. After all, $8 is hardly a large outlay and I've been paying over $100 for each pair I've had for my entire lifetime.

Was I in for a surprise! I went to http://zennioptical.com - home of the $8 glasses, ordered a pair from my prescription and they were perfect! The only difference between ordering online and in person from a local optical outlet was the choice of frames (more online) and the price.

Ok, the $8 aren't really $8, they're $12.95 with shipping. On the other hand, you can order 2 pairs for $16 plus the same $4.95 shipping.

Here's the hard part. You need to know your "PD" or Pupillary Distance. That's the measurement in millimeters between your pupils. Normally, this measurement is done by the optician who fits your glasses but it can also be done by your regular eye doctor if you ask them to do it. Next time you're in for an exam, ask! Also ask for it to be written on your prescription.

Once you have your PD, it's a snap to order your glasses online. There is one other drawback. It takes about two weeks to receive your new glasses. With a local optician, you can get them in half the time, but unless you have insurance paying the bill, it's going to cost you a bunch for that extra week.

I'm all for supporting the local economy and all, but these opticians take a huge cut. I'm guessing they pay about $8 for your single vision frames and lenses, so the rest is pure profit. It does cost a lot to keep an office, the lights on, etc., but enough is enough. I'm tired of paying too much for some plastic and a few metal bits. Ordering online makes sense to me.

If you feel timid about ordering a medical device online, get your next pair from the optician, get your PD and prescription and try one of these online dispensaries for an extra pair. You only have $12.95 to lose and having an extra cheap pair of glasses around might be a good thing, don't you think?

Android Market App Movement

I've been monitoring the Android market "News & Weather" category since we published our "Radar Now!" app and have noticed some interesting behavior in how the market moves apps to the top of the popularity tab. Most apps, like "Radar Now!" experience slow and steady growth, or none at all. Other apps zoom from nowhere to the front of the line. This graphic represents eight apps sampled over a little more than a month. The numbers on the left hand side indicate the app's overall placement in the market, the lower the better.

Android Market Sample Apps in the News and Weather Category

Click on the graphic for a full size image.

December 23, 2009

New Zipcodes - 2010/01

Five new Zip Codes for January, 2010.

09358 FPO
09608 FPO
09859 FPO
96502 FPO
96516 FPO

December 26, 2009

Website for "Radar Now!" Android App

We've launched a website to accompany our "Radar Now!" Android application that shows the usage over the previous day.


An interesting aspect of this custom overlay based map is how the tiles are generated. Since "Radar Now!" pretty much is used in every part of the US, tiles for the entire country have to be generated for each zoom level.

Each night, the tile generator scans through the database for records that have had activity for the previous 24 hours and generates 5 zoom levels in about two minutes.

About December 2009

This page contains all entries posted to maps.huge.info / USNaviguide LLC in December 2009. They are listed from oldest to newest.

November 2009 is the previous archive.

February 2010 is the next archive.

Many more can be found on the main index page or by looking through the archives.

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