Is the first percentage Join hits to Join Submits and the 2nd percentage Join Submits to Joins?
If so it might be helpful to share the number of join hits for each period so that it can be tied into the data. If you see a swing from 37% join submits to 8% then that would be one thing if the join hits were nearly the same but it might mean another if the join hits during the period where you see 8% were 5 times what they were in the period where you saw 37%.
I see oddities as an affiliate even so I'm definitely interested, but I think it would help to provide some more data if you can.
