hell0 derr - back when I used to do a LOT of offers, I'd do probably an hour or two a day. There was a period back in January of this year where the Lagoons had incredibly high approval rates with My Insider Rewards offers, and that that point, I did entire sites worth of MIR offers for like 60 points in two hours.
Now, I've found that I have abysmal approval rates on these sites, so even though I try offers here and there, I rarely get credited. Gotta love referrals though...
EDIT: And a quick prize update: my $25 BB gift card from GL came with no problem. My $30 card from FPS, though, required two phone calls and about 3 days to get reverified and approved. That card should be here today or tomorrow. On another note, I spent the $230 worth of BB credit that I had earned over the last few months to buy a Nintendo Wii and a 2 year product replacement plan. The final bill on my end was $90, but I still have $55 more in credit once my FPS card comes! I'm saving up, now for Guitar Hero World Tour on the Wii.