Platforms like BMF.io typically support sub-ID tracking for different traffic sources, allowing marketers to tag clicks with unique identifiers for campaigns, channels, or publishers. In practice, sub-IDs help break down performance data so you can see which ads, emails, or social posts generate conversions. Instead of only viewing overall traffic, you can trace each user path and compare results across variations. This is similar to analyzing behavior signals in other analytics systems, where detail matters more than raw volume. If implemented, BMF.io would let users optimize spending, refine targeting, and cut underperforming sources.