The internet 'smiley' has been adopted into Russian, but with a diminutive suffix -k. It's not смайли, but смайлик — smileyk or smileek.
It's an interesting case of morphological change as it gives the word masculine gender and also allows declension. If it stayed as it is in English - смайли - it would require neutral gender and no declension. Most probably the change stems from the natural language inclination towards ease of use.
This one is by me, see it on my I Work in Pages blog.