so I jumped on a fresh mobile app install offer last week, thought I cracked the code after some positive early data. but no. turns out, the niche was overly saturated and the traffic quality was garbage. paid a premium for non-engaging users and the conversions plummeted after day 3. lesson? not all installs are created equal and chasing big numbers w/o vetting the source kills ROI fast. also learned the hard way that tracking clarity is everything the installs looked good but most were low quality. gonna go back to narrower geo targeting and focus on proven sources, but damn this one stung. maybe next time I'll check user retention metrics first before throwing money at a broad audience. keep your eyes on the prize, data doesn't lie, but it can definitely mislead if you don't dig deep.