T.I.L. (Today I Learned)
Often used as a space saver on websites such as Reddit or DIGG when writing the titles of links to interesting things the submitter has learned that day.

Common misspelling of "till", as in "until". Look it up.

'til is the correct abbreviation of until and not a 'Common misspelling of "till", as in "until".'
Till is the common misspelling of until, but is in fact a cash register or a preparation of soil in readiness for planting.
Until is a future time reference.

Today I learned...

Until, later

Mostly known as a man name, Til's are know for liking Chelsea boots and having blond hair.

To be lit or hight off 42 degree surface

Or
Lit spelled backwards