This is closely related to 1/89 expansion as discussed here:

http://news.ycombinator.com/item?id=653214

The name "Designer Decimal" gave me a fun idea for a quick frolic with perl's Math::BigFloat.

Take my username, rwolf, for example. Using a leading 1., ASCII characters padded to 3 digits, and a terminating character of 004 (EOT), it could be written as the fraction 1.114119111108102004.

The fun part is finding a fraction approximate of this number, or a "Designer Fraction". Some silly perl coding (http://pastebin.com/m1d0dcd39) later, I find 663486451 / 595525599 = 1.114119111108102004...

Now how to fit this fraction onto my business cards...

This gives me some interesting ideas for ASCII-oriented obfuscated code...