Key lime question

I searched for for lime seeds poisonous. What did you search for?

What articles did you read that left you confused?

This is the only thing I found that gave a useful measure:
http://www.straightdope.com/columns/read/193/are-apricot-seeds-poisonous

Anything else that came up for lime seeds poisonous gave an indefinite amount ("large quantities", with no notion of what constitutes large or small).

If you consider how many seeds would have to be in a key lime (cut one up and count 'em), or how many key limes it would take to make a cupful of seeds (the amount of seeds given in the above article), simple math suggests you have little to be concerned about unless your diet consists of nothing but citrus smoothies.

Personally, I know people who eat entire apples and pears, seeds and all, and have done so for decades. They are no worse for it.