MissJenny turned me on to this new service that acts as a marketplace for logos. The unique thing is that designers can build an entire brand – with company name, logo and a reserved domain name – and places it for sale at a fixed price. For designers this can mean selling designs already completed that a client never used. For small businesses (and serial entrepreneurs) this means they save a lot f time and know exactly what they are getting.

Save time browsing a ready inventory.

Save money with designer-set prices.

See how logos fare in a peer-reviewed community.

Buy and talk directly with designers, not a sales person or middleman.

via Buy Logo Designs |  Brandstack.

“ The grid system is an aid, not a guarantee. It permits a number of possible uses and each designer can look for a solution appropriate to his personal style. But one must learn how to use the grid…”

via The Grid System.

But the nice thick Enhanced Matte posterboard (24”x30” sheet) is 0.047 inches (1.2 millimeters) according to: http://pe.usps.com/text/qsg300/Q201.htm

I also see there are limits on stiffness so probably this material will not qualify for the postcard rate.

Examples of a nonmachinable letter include:

It has an aspect ratio (length divided by height) of less than 1.3 or more than 2.5 (a square envelope has an aspect ratio of 1, making it nonmachinable).
It is more than 4-1/4 inches high or more than 6 inches long and is less than 0.009 inch thick.
It has clasps, strings, buttons, or similar closure devices.
It is too rigid.
It has a delivery address parallel to the shorter side of the mailpiece.
It contains items such as pens, pencils, or keys that create an uneven thickness.
Letters with nonpaper surfaces, other than envelope windows or attachments that are allowed under eligibility standards by class of mail.

via QSG 201 Commercial Letters and Postcards – Physical Standards for Commercial Letters and Postcards.