Learn Spanish (Latin America): No pienses que ese enlace es bueno.

This is a negative command telling someone not to do something. For the verb pensar (to think), two things happen in a negative tú command. First, it keeps its usual stem change where the e becomes ie. Second, because it is an -ar verb, the ending swaps to an -es for negative commands, making it no pienses.

Why is it ese enlace and not eso enlace?

Enlace (link) is a masculine noun. When pointing out a specific masculine noun, you must use ese (that). Eso is the neutral form, which is only used for abstract ideas or unknown objects, never directly in front of a noun.

Does enlace specifically mean a website link?

Yes, in digital contexts, enlace is the standard word for a web link or hyperlink. In other contexts, it can mean a physical connection, a bond, or a marriage. You might also hear people just say el link in casual Latin American Spanish.

Why do we use es instead of está for 'is good'?

We use es (from the verb ser) because we are talking about an inherent quality of the link. If a web link is useful, safe, or high-quality, that is a characteristic of what the link is, rather than a temporary condition or state.