On the fundamental side I like the revenue, quarterly YOY growth, and cash to debt ratio.
On the technical side it's a good low risk trade for me. If it drops below $24 I'd exit my position with a ~$3 per share loss. This is an 11% loss for my initial entry, which is only 1/3rd of the total position I want to have, so 3.7% risk for my total position.
I think FB has potential to be a good company, it was just overvalued by 30-40% at its IPO with no proof that it could generate an income.