Beware the yarns of eBay

So here's the thing, you buy yarn thinking that it is as stated, worsted, when in fact it is nothing more than sport. Worse than that, you cannot, abosolutely cannot get it to knit to the given guage. Never mind you think, I'll select another pattern from the pile which has a similar gauge. I'll make good....

Click, click, click go the needles for a good many rows until, what's this? A knot! And another! And another! Can you see all the strings hanging from the side of this thing?

Front:

Back: Hmmmm, maybe the $11 a ball yarn has it's purpose after all...

But until I magically win the yarn lottery I guess I'm stuck with this yarn from eBay. Although the yarn is busting my chops, I am rather liking the waffle pattern of the cardigan from my vintage book. Only another three inches before the armhole decreases! (Because everyone knows, that's where knitting the back of a cardigan gets fun.)