Just as a random exercise, I took the top 26 viewed posts in this 'Find a Third' forum and matched up their response rate. Here's what I got:
- 314 19616 1.60%
- 635 16608 3.82%
- 242 10255 2.36%
- 183 8124 2.25%
- 276 8092 3.41%
- 417 7625 5.47%
- 331 5959 5.55%
- 32 4902 0.65%
- 131 4447 2.95%
- 244 3917 6.23%
- 58 3688 1.57%
- 114 3426 3.33%
- 82 3354 2.44%
- 57 2776 2.05%
- 26 2698 0.96%
- 19 2515 0.76%
- 17 2249 0.76%
- 16 2042 0.78%
- 13 1936 0.67%
- 59 1798 3.28%
- 34 1774 1.92%
- 2 1710 0.12%
- 103 1575 6.54%
- 44 1571 2.80%
- 6 1440 0.42%
- 32 1423 2.25%
Totals:
3487 125520 2.78% ← Average response rate
So on average, a post looking for a third only converts about 3% of it's views to responses.