People warned me when I took the project on. They said the size was not what it seemed - just make the larger size and trust them.
But I have small feet! It may be the only part of me that is small. Every other sock I have knit for myself has been either a ladies' small or ladies medium - so when I saw that the Jaywalker sock (Ravelry link) came in two sizes, I automatically cast on for the smaller size.
I finished my first sock late Saturday night, and to my utter dismay, it doesn't fit. I couldn't even get the blasted thing over my heel. I know I have wider than normal feet - but I only wear a size 6.5/7. I'm crushed. I loved this skein of Ellen's Half-Pint Farm sock yarn since I bought it at my first MDSW and had planned Jaywalkers for them right from the beginning.
I did cast on for the second one right away - someone with smaller and narrower feet than me is going to get some very pretty socks when I finish the second one.
And I printed off the new pattern with the larger sizes and I will knitting the pattern again with a different yarn. Sigh...