I've had several SBs dump me for more lucrative opportunities. With or without any praise from me. Happy to let them go. I always tell my SBs how beautiful and awesome they are, how much I adore them, etc. etc. They always eat it up and it's never backfired on me.
I've never been asked for more as direct response to praise. But I have been asked to "reevaluate" after some milestone time period like a one-year anniversary.
I've also seen an indirect form of this when she asked to go to monthly allowance. She promotes the idea as more convenient each of us, and as better sense of "security" for her and her ongoing long-term commitment. But the devil is in the details of course, and the underlying "mathing" doesn't really math out correctly. It's an obvious error (at least to me and I expect most SD's) to propose say $1,500 a month and say that's what she needs to cover her bills when you are at $300 ppm a week now. She then goes on to offer a "bonus" BCD once a month, as long as her schedule is open. Well hindsight shows us that not only does the Bonus never happen, but she now has less incentive to meet every week.
This is explained by my theory (from previous posts) that once the cash hits her palm, it completely disappears from an SB's awareness. What happens instead? As she approaches that 3rd or 4th planned BCD she realizes she about to have sex for "zero" allowance. The gift she received at the beginning of month is no longer remembered or considered. She may actually feel resentment that she is expected to smash for "free."
Of course when you do the math for her:
-- $300 x 52 weeks = $15,600 annual allowance
-- $15,600 annually / 12 months = $1,300 per month, not $1,500
She just won't admit to seeing the discrepancy.
End of rant - apologies
Back to the OP's point:
Being blackmailed with your sincere praise qualifies her for instant termination of the arrangement. Imagine the flipped script: You tell her that her BJ's skills are lacking and she's gained 25 pounds since you met and all of that is on her back and stomach. So you're just going to decrease her allowance by 25% until she fixes those problems.
After she kicks you in the balls, she will bail before you can get off the floor to grab an ice pack.
Life is good
The Cat
I imagine I'm on the extreme of praising and it has not backfired on me at all, in fact it has brought her closer to me emotionally. It started when she was so amazing in bed that I tried to praise her yet I was speechless. We laughed about it. I said maybe I can write what I felt instead. That has started a flow of poetry that I have written about her and to her. I've probably sent her over 100 poems that I wrote over the last couple of years. (I started with haikus.) They range from sexy to complimentary, but never romantic. She loves them and comments on them. I told her she was my muse and she fills that job description easily. I'm sure this is a very unique situation. I'm lucky she's not a gold digger SB but has only asked for two things - make her feel safe and take care of her. Easily done.