Stable income: Somewhat stable

LinkedIn Profile Optimizer can provide a moderately stable income source for most people who try it. Based on online research and personal experience, individuals can earn consistently from optimizing LinkedIn profiles, although there may be some fluctuations in income over time. If your best friend quit their job to pursue this full-time, you could say there is a decent baseline income to rely on, but it may not be as predictable as a traditional job. I'd rate it a 3 out of 5 because while it offers a decent baseline income, there can still be some variability in earnings, making it less stable than a traditional job.