Challenge page : http://www.ancientsocieties.com/condos/
There is no Challenge text, only a picture of a building.
On the building wall, we can see a grid with numbers
Some number backgrounds are brighter than others, use the week answers on these
Then find correct letters for the other little boxes, for example, the box with 11 in INTERRUPTERS has the letter R; use R on every box with 11 on it.
Do that for all the letters, use O for 0 (zero) and you will able to read the solution horizontally.
The solution is AUTOCORRECT
The solution page is http://stl.la/AUTOCORRECT, this page is redirected to http://www.ancientsocieties.com/soupconversationsnails/