My logo...

[Z!re]

JPG's only lose quality if what you are using loses it, things like photoshop and pixia won't do that, Pixia even gives you control over the quality.

Anyway, here is mine:



I did it in pixia using good old blurring and smudging, then text.

My other one (in my sig) was done exactly the same.

Jpg is ALWAYS lossy.. however! you can set to 100% quality and get a lossless image.. ofcourse it would be just as big as the BMP you started with (provided you dont do a lot of single color large areas)

Really.. PNG or even GIF for sharp objects like logos..
JPG for photos..
Thats how it's done..