TASK DEFINITION: Given a travel related situation, and given a specific question about the situation, summarize the question into a title
PROBLEM: I'm arriving in Thailand and spending 1 month there, traveling other countries for 1 and a half months and then returning for 2 weeks before catching my flight out from Bangkok.

Is it true that they will refuse my entry if my outgoing flight isn't within 30 days of arrival?

I haven't booked the flights yet. What is the best way to do this?

SOLUTION: Can I get into Thailand if my outgoing flight is 3 months later?

PROBLEM: An airline company I've been keeping track of recently held a sale. Before the sale, the airfare prices were very cheap on weekends, and very expensive on weekdays (Sat, Sun, long haul flights are at $700 -- Mon-Fri are at $1,300!). During this long sale, their cost is $900 to $1,000. Maybe, because the cheapest flights have been booked at the sale's commencement and all that's left are the not-so-cheap but not-so-expensive fares...

Should I buy now or wait a few days after the sale?

SOLUTION: Buy airfares now or after the sale?

PROBLEM: I see many questions here refer to a US "visa stamp", or "getting a visa stamped" for the US, and I often find it difficult to imagine what is going on with this stamp.

Is it the visa sticker itself that is being referred to as a "stamp"? (This wouldn't be quite as crazy as it sounds -- a postage stamp is a sticker, after all -- but on the other hand such a usage is not evident for any other country's visa stickers).
Or is it the admission stamp in one's passport (showing immigration category and how long a stay one has been granted) that people call a "visa stamp", despite not actually being a visa?
Or do (some classes of?) US visas actually need to have some kind of ink stamp applied to them in order to be valid?

SOLUTION:
What's the deal with "stamping" US visas?