Is it because there are just fewer personal websites to link to? I run a couple of small websites - one has eight or so links to similar personal-ish websites (

Is it because there are just fewer personal websites to link to? I run a couple of small websites - one has eight or so links to similar personal-ish websites (non-reciprocal - just links I find useful and I assume my readers will find useful) but the other has no such links, just because I haven't found anything similar worth linking to.