Was thinking of the following...
Advertising on multiple handheld forums
InsertCoin on Engadget
Any other ideas?
Besides targeting gamers, you should also try to get the attention of developers at forums like Gamasutra. Although the ports and emulators the Zero plays are great, having a selection of original games developed specifically for the Zero could really help it stand out from the crowd of emulator handhelds currently on the market.
GBC,GBA,GBA SP,NDS,NGPC,Panasonic FZ-10 3DO,NES,Sega Nomad,Sega CDX w/Power Base Converter,PS1,PS2,PS3,Saturn,Dreamcast,PC (Win 98, XP, 7),Dingoo A320,Dingoo A330,Gemei A330,LetCool N350JP,PAP-GAMETA,GCW-Zero SE,Kyocera Rise,2DS,GP2X-F100,GPD G7,JXD 100,JXD A1000,JXD A3300,JXD F3000,JXD V5000,JXD S7300B,Hyperkin SupaBoy
Currently playing: Theatrhythm Final Fantasy Curtain Call (2DS)