[DLCPhoto]

With reference to having to zoom in in order to click on a link, you can edit Opera.ini, specifically:
[Adaptive Zoom]
Minimum Overview zoom=85

The original value, I believe, is 60. This enables me to click on a link without zooming, although depending on the size of the link, it is sometimes still helpful to zoom in.

While you're in there, you can also change the default maximum number of tabs:
Maximum Allows Tabs=

The default is 2, and I have mine on 5; some like more.

If you "double-tap" the screen, that will initiate a zoom without touching the zoom bar, so I suspect that's what's causing the behavior you're noticing. This actually comes in handy when reading various forum posts I monitor.

Not sure about it reporting itself as Mobile, but many sites have a specific site for Mobile devices (m.whatever.com).