An SSL/TLS handshake requires at least 10 times more processing power on a server than on the client. SSL renegotiation attacks can readily take advantage of this asymmetric workload. Watch this video to learn how to easily mitigate these attacks.
The included Opera Mobile 9.5 browser rendered most sites accurately, but Flash support is absent. The scroll dial let me zoom in on pages, and I could move around a zoomed page by touching the screen and sliding my finger. However, there's no multitouch-style zooming like on the iPhone.