… We do not trust you, you might decide to hack your gift label:
I bought my girlfriend a present from Amazon, and thought I would make use of their gift wrapping service. For the note I settled on the conservative “To … From …” but added my own personal touch, “<3” (how is that for creativity?). Amazon, however, decided they did not like that, so they turned < into the corresponding HTML entity. You have to give it to them, though; they take security very seriously.