OK, a few tips here.
One, I always go all the way to the end. They're paying you to look at the ads, not just give them your email address. You may occassionally get a credit with that, but you're better off going till you make it through the gold, silver, platinum offers page.
Two, are you clicking on confirmation emails? The reason I ask if you said your inbox was full of spam. What I do is I open that in another tab before I start. Then, I go in and DELETE EVERYTHING both in the inbox and spam folder. It helps make it easier to pick up on any confirmation emails. Even if it doesn't say to click to confirm, I try to click anyways just to let them know it's valid. I also get a new gmail account for offers when one stops working. When's the last time you changed your email for that?
FF, I think to get the Join the forum credit, you have to click through the link, log in, and add your user ID/referral number to yoru profile. Did you do that? If it's already there, I think Tricia said you just have to click to edit your profile. That one should credit immediately. I probably wouldn't try that one again for 30 days though, unless Tricia or Cindy or a mod pops in and says otherwise.
I hope you can find that last few cents! Have you done an OTX today?
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