Guides

The concepts behind the cards, explained in plain language — so the comparisons make sense and you can spot the traps. Vendor-neutral, and each links to the live tools where the specifics live.

• LoungeBuddy is gone — how to find airport lounges nowAmex bought LoungeBuddy in 2019 and retired it in January 2025. Here’s what it did, what replaced it, and how to work out which lounges your cards actually get you into.
• Deferred interest: the store-card trap“No interest if paid in full” isn’t a 0% offer — and the difference can cost you hundreds.
• Fee-harvester cards: when fees eat your credit lineSubprime cards whose fixed fees consume a big share of a low credit limit before you spend a dollar.
• Is a credit card annual fee worth it?A simple framework: does the value you’ll actually use beat the fee?
• Points transfers, explainedWhy transferable points beat fixed cash-back for travel — and how the “starter card then partners” play works.
• How credit-card airport lounge access worksThe networks, how cards grant access, and the guest-policy fine print.
• The best cards for AI & SaaS spendChatGPT, Claude and your SaaS stack are a real spend line now — but the “4X software” pitch usually doesn’t apply. Here’s the honest math.