My FMIL is a very sweet lady but sometimes my FI and I get frustrated. I will admit that sometimes I will peruse these boards to get some perspective because some people's FMIL's are real peaches. However, I just read this and I couldn't believe it! Thank goodness none of our MIL's want to poison us (the last letter)!!
http://www.slate.com/articles/life/dear_prudence/2012/05/dear_prudie_mother_s_day_advice_on_plastic_surgery_gifts_and_poison_.2.html