I am going to post links to challenge blogs here as I run across them
http://daisydoodlescreativechallenges.blogspot.com/
SUNDAY
http://www.practicalscrappers.com/
http://onestitchatatimechallenge.blogspot.com/
http://thecraftypad.blogspot.com/
http://rosiedeeschallenge.blogspot.com/
http://magicalcraftsfortnightlychallenge.blogspot.com/
http://www.papersundaes.blogspot.com/
http://alyssundaychallenge.blogspot.com/
http://annscreativenook.blogspot.com/
http://hopestampseternal.blogspot.com/
MONDAY
http://incywincydesigns.blogspot.com/
http://craftycardmakers.blogspot.com/
http://stampwithfun.blogspot.com/
http://ooh-la-la-creationschallenges.blogspot.com/
http://sophisticatchallenges.blogspot.com/
http://thepinkelephantchallenge.blogspot.com/
http://cupcakecraftchallenges.blogspot.com/
http://lexiscreations.blogspot.com/
TUESDAY
http://aspoonfullofsugarchallenge.blogspot.com/
http://digitaltuesdaychallenge.blogspot.com/
http://papertakeweekly.blogspot.com/
http://www.flourishes.org/blog/
http://www.mytimetocraftchallenge.blogspot.com/
http://creativecardcrew.blogspot.com/
http://everybody-art-challenge.blogspot.com/
WEDNESDAY
http://forfunchallenges.blogspot.com/
http://craftycreationschallenges.blogspot.com/
http://fabnfunkychallenges.blogspot.com/
http://creativecottagechallenge.blogspot.com/
http://www.stampinroyalty.blogspot.com/
http://craftyannschallengeblog.wordpress.com/
http://flutterbywednesdays.blogspot.com/
http://cinspirations.blogspot.com/
http://abc-challenge.blogspot.com/
http://cookingitupwithkatie.blogspot.com/
http://www.simonsaysstampschallenge.blogspot.com/
http://ynschallenges.blogspot.com/
http://tandastamps.blogspot.com/
http://pennyschallenges.blogspot.com/
THURSDAY
http://ilovedigichallenge.blogspot.com/
http://cutecardthursday.blogspot.com/
http://handfullofstamps.blogspot.com/
http://meljensdesignsdt.blogspot.com/
http://theplaydatecafe.blogspot.com/
http://www.charismacardz.blogspot.com/
http://www.palspaperarts.com/
http://trimmiescraftchallenge.blogspot.com/
http://paperplaychallenges.blogspot.com/
http://movingalongwiththetimes.blogspot.com/
http://designed2delight.blogspot.com/
FRIDAY
http://stampinfortheweekend.blogspot.com/
http://fridaysketchersblog.blogspot.com/
http://simpledoodles.blogspot.com/
http://stampchallenges.blogspot.com/
http://resqchallenge.blogspot.com/
http://daringcardmakers.blogspot.com/
http://papercutzchallenge.blogspot.com/
http://dareu2digistamp.blogspot.com/
http://sewmanychallenges.com/
http://clearlyistamp.typepad.com/
http://fussyandfancychallenge.blogspot.com/
http://prairiefairyfridays.blogspot.com/
SATURDAY
http://bee-crafty.blogspot.com/
http://sketchsaturday.blogspot.com/
http://ourcreativecorner6.blogspot.com/
http://thesecretcraftersaturdaychallenge.blogspot.com/
http://aimeeschallenges.blogspot.com/
http://ssdschallenge.blogspot.com/
http://sweetstopsketches.blogspot.com/
BI-MONTHLY
http://ebtkschallenge.blogspot.com/
MONTHLY
http://bythecuteandgirly.blogspot.com/
http://craftycalendarchallenge.blogspot.com/
http://sirstampalotchallenge.blogspot.com/