Most chapters are fine in regards to watermarks. When it's just a line that says "Read first at Lolscans.com" inbetween squares, it's totally appropriate. But some of the later chapters, starting from ch. 84 being the worst offender, are just horrendous. That is just crossing the line. Hopefully Lolscans will scale it down a bit more, even though chapter 88 is already halfway decent, except that the watermark still cover some of the art.
*edit/* seems like chapter 84 has been properly updated. Tons of respect to scanlators that appreciate and react to reader feedback!