I'm not sure it has been raised before as this is not a stack I visit. I've seen this ad on another stack:
My eyes started to bleed.
Ok, not that much, but since my vision could be better, I really had trouble reading what's on there. So I put on my glasses and have the same issue.
Perhaps the colour of the font should be changed to white, with a blue drop shadow instead. Anyways, I'm not really there to suggest anything, I'm no designer.. It's just that now it's really hard to read.
UDPATE 2015-09-15: The font color seems to have been fixed to some degree into plain white, which makes it less agressively fighting with the background (that has been fixed, too) and improves readability.
However, I'd still not consider this solved yet, since the current plain white text and the very bold and blurry font is still quite hard on the eyes.