It's a trade off. If you anchor high you're saving yourself time from the majority of companies that try to underpay you. If you don't anchor, you risk getting

It's a trade off. If you anchor high you're saving yourself time from the majority of companies that try to underpay you. If you don't anchor, you risk getting your time wasted but eliminate the risk not knowing what you're worth. If you are a highly in-demand, already highly-paid developer, it is likely in your best interest to anchor high. If you are a junior level and trying to get a middle-level role, it's probably better to not anchor.